drm/amdgpu: fix duplicated mapping invoke bug

fix the bug that there is duplicated bo_update_mapping issued

Signed-off-by: monk.liu <monk.liu@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
monk.liu 2015-08-14 13:36:41 +08:00 • committed by Alex Deucher
commit 6d1d0ef743