drm/amd/powerplay: Don't cast kzalloc() return value

The kzalloc function returns a void pointer and the assignment
operator converts it to the type of pointer it is assigned to.
Therefore, there is no need to cast.

Issue found by alloc_cast.cocci:
* WARNING: casting value returned by memory allocation function
to <struct type> is useless.

Path to the cocci script: scripts/coccinelle/api/alloc/alloc_cast.cocci
Signed-off-by: Georgiana Chelu <georgiana.chelu93@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/hwmgr/vega10_processpptables.c

@@ -291,8 +291,7 @@ static int get_mm_clock_voltage_table(
 	table_size = sizeof(uint32_t) +
 			sizeof(phm_ppt_v1_mm_clock_voltage_dependency_record) *
 			mm_dependency_table->ucNumEntries;
-	mm_table = (phm_ppt_v1_mm_clock_voltage_dependency_table *)
-			kzalloc(table_size, GFP_KERNEL);
+	mm_table = kzalloc(table_size, GFP_KERNEL);
 
 	if (!mm_table)
 		return -ENOMEM;
@@ -519,8 +518,7 @@ static int get_socclk_voltage_dependency_table(
 			sizeof(phm_ppt_v1_clock_voltage_dependency_record) *
 			clk_dep_table->ucNumEntries;
 
-	clk_table = (phm_ppt_v1_clock_voltage_dependency_table *)
-			kzalloc(table_size, GFP_KERNEL);
+	clk_table = kzalloc(table_size, GFP_KERNEL);
 
 	if (!clk_table)
 		return -ENOMEM;
@@ -554,8 +552,7 @@ static int get_mclk_voltage_dependency_table(
 			sizeof(phm_ppt_v1_clock_voltage_dependency_record) *
 			mclk_dep_table->ucNumEntries;
 
-	mclk_table = (phm_ppt_v1_clock_voltage_dependency_table *)
-			kzalloc(table_size, GFP_KERNEL);
+	mclk_table = kzalloc(table_size, GFP_KERNEL);
 
 	if (!mclk_table)
 		return -ENOMEM;
@@ -596,8 +593,7 @@ static int get_gfxclk_voltage_dependency_table(
 			sizeof(phm_ppt_v1_clock_voltage_dependency_record) *
 			clk_dep_table->ucNumEntries;
 
-	clk_table = (struct phm_ppt_v1_clock_voltage_dependency_table *)
-			kzalloc(table_size, GFP_KERNEL);
+	clk_table = kzalloc(table_size, GFP_KERNEL);
 
 	if (!clk_table)
 		return -ENOMEM;
@@ -663,8 +659,7 @@ static int get_pix_clk_voltage_dependency_table(
 			sizeof(phm_ppt_v1_clock_voltage_dependency_record) *
 			clk_dep_table->ucNumEntries;
 
-	clk_table = (struct phm_ppt_v1_clock_voltage_dependency_table *)
-			kzalloc(table_size, GFP_KERNEL);
+	clk_table = kzalloc(table_size, GFP_KERNEL);
 
 	if (!clk_table)
 		return -ENOMEM;
@@ -728,8 +723,7 @@ static int get_dcefclk_voltage_dependency_table(
 			sizeof(phm_ppt_v1_clock_voltage_dependency_record) *
 			num_entries;
 
-	clk_table = (struct phm_ppt_v1_clock_voltage_dependency_table *)
-			kzalloc(table_size, GFP_KERNEL);
+	clk_table = kzalloc(table_size, GFP_KERNEL);
 
 	if (!clk_table)
 		return -ENOMEM;
@@ -772,8 +766,7 @@ static int get_pcie_table(struct pp_hwmgr *hwmgr,
 			sizeof(struct phm_ppt_v1_pcie_record) *
 			atom_pcie_table->ucNumEntries;
 
-	pcie_table = (struct phm_ppt_v1_pcie_table *)
-			kzalloc(table_size, GFP_KERNEL);
+	pcie_table = kzalloc(table_size, GFP_KERNEL);
 
 	if (!pcie_table)
 		return -ENOMEM;
@@ -1026,8 +1019,7 @@ static int get_vddc_lookup_table(
 	table_size = sizeof(uint32_t) +
 			sizeof(phm_ppt_v1_voltage_lookup_record) * max_levels;
 
-	table = (phm_ppt_v1_voltage_lookup_table *)
-			kzalloc(table_size, GFP_KERNEL);
+	table = kzalloc(table_size, GFP_KERNEL);
 
 	if (NULL == table)
 		return -ENOMEM;