drm/amdgpu: update pd while updating vm as well

Change-Id: I93a861cd6707f7d91672b9e19757cc50008cd7a2
Signed-off-by: Chunming Zhou <[e-mail]>
Reviewed-by: Christian König <[e-mail]>

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

···
 		if (domain == AMDGPU_GEM_DOMAIN_CPU)
 			goto error_unreserve;
 	}
+	r = amdgpu_vm_update_page_directory(adev, bo_va->vm);
+	if (r)
+		goto error_unreserve;
 
 	r = amdgpu_vm_clear_freed(adev, bo_va->vm);
 	if (r)