drm/amdgpu: sriov is forbidden to call disable DPM

Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Acked-by: Yintian Tao <yttao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/amdgpu_smu.c

@@ -1403,6 +1403,9 @@ static int smu_hw_init(void *handle)
 
 static int smu_stop_dpms(struct smu_context *smu)
 {
+	if (amdgpu_sriov_vf(smu->adev))
+		return 0;
+
 	return smu_system_features_control(smu, false);
 }