drm/amdgpu: no updates shouldn't cause vm flush v2

v2 (chk): split fix from original patch

Signed-off-by: monk.liu <monk.liu@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
1 file changed