drm/amdgpu/sriov: fix Tonga load driver failed

Tonga sriov need to use smu to load firmware.
Remove sriov flag because the default return value is zero.
Signed-off-by: Jack Zhang <Jack.Zhang1@amd.com>
Reviewed-by: Trigger Huang <Trigger.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -2755,8 +2755,6 @@ int amdgpu_pm_load_smu_firmware(struct amdgpu_device *adev, uint32_t *smu_versio
 {
 	int r;
 
-	if (amdgpu_sriov_vf(adev))
-		return 0;
 
 	if (adev->powerplay.pp_funcs && adev->powerplay.pp_funcs->load_firmware) {
 		r = adev->powerplay.pp_funcs->load_firmware(adev->powerplay.pp_handle);