drm/amdgpu/pm: smu_v13_0_4: delete duplicate condition

There is no need to check if "clock_ranges' is non-NULL.  It is checked
already on the line before.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_4_ppt.c

@@ -644,7 +644,6 @@ static int smu_v13_0_4_set_watermarks_table(struct smu_context *smu,
 	if (!table || !clock_ranges)
 		return -EINVAL;
 
-	if (clock_ranges) {
 	if (clock_ranges->num_reader_wm_sets > NUM_WM_RANGES ||
 		clock_ranges->num_writer_wm_sets > NUM_WM_RANGES)
 		return -EINVAL;
@@ -678,7 +677,6 @@ static int smu_v13_0_4_set_watermarks_table(struct smu_context *smu,
 	}
 
 	smu->watermarks_bitmap |= WATERMARKS_EXIST;
-	}
 
 	/* pass data to smu controller */
 	if ((smu->watermarks_bitmap & WATERMARKS_EXIST) &&