drm/amd/powerplay: Remove unneeded return from pp_smu7_thermal_fini()

Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/hwmgr/smu7_thermal.c

@@ -572,5 +572,4 @@ void pp_smu7_thermal_fini(struct pp_hwmgr *hwmgr)
 {
 	phm_destroy_table(hwmgr, &(hwmgr->set_temperature_range));
 	phm_destroy_table(hwmgr, &(hwmgr->start_thermal_controller));
-	return;
 }