Fixes: 7c83d7ab ("drm/amdgpu: Only update the CUR_SIZE register when
		necessary")
Signed-off-by: NFlora Cui <Flora.Cui@amd.com>
Reviewed-by: NMichel Dänzer <michel.daenzer@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>