Since on early phase of bringup, the SMU IP may be not enabled or
supported. Without this, we may hit null pointer dereference on
accessing smu->adev.
Signed-off-by: NEvan Quan <evan.quan@amd.com>
Reviewed-by: NYong Zhao <Yong.Zhao@amd.com>
Tested-by: NYong Zhao <Yong.Zhao@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>