drm/amdgpu: Fix kcalloc over kzalloc in 'gmc_v9_0_init_mem_ranges'

Replace kzalloc(n * sizeof(...), ...) with kcalloc(n, sizeof(...), ...)
since kcalloc is the preferred API in case of allocating with multiply.

Fixes the below:

WARNING: Prefer kcalloc over kzalloc with multiply

Cc: Guchun Chen <guchun.chen@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c

@@ -1972,10 +1972,9 @@ static int gmc_v9_0_init_mem_ranges(struct amdgpu_device *adev)
 {
 	bool valid;
 
-	adev->gmc.mem_partitions = kzalloc(
-		MAX_MEM_RANGES * sizeof(struct amdgpu_mem_partition_info),
+	adev->gmc.mem_partitions = kcalloc(MAX_MEM_RANGES,
+					   sizeof(struct amdgpu_mem_partition_info),
 					   GFP_KERNEL);
-
 	if (!adev->gmc.mem_partitions)
 		return -ENOMEM;