drm/amdgpu: fix bug occurs when bo_list is NULL

Still need to handle ibs BO and validate them even bo_list is NULL

Signed-off-by: Monk.Liu <monk.liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
monk.liu 2015-04-27 15:19:20 +08:00 • committed by Alex Deucher
commit 840d51445f