drm/amdgpu: move ib.fence to job.fence

Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
index df2f6666..063064c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
@@ -72,8 +72,8 @@
 	unsigned i;
 
 	for (i = 0; i < job->num_ibs; ++i)
-		amdgpu_sa_bo_free(job->adev, &job->ibs[i].sa_bo, job->ibs[job->num_ibs - 1].fence);
-	fence_put(job->ibs[job->num_ibs - 1].fence);
+		amdgpu_sa_bo_free(job->adev, &job->ibs[i].sa_bo, job->fence);
+	fence_put(job->fence);
 
 	amdgpu_bo_unref(&job->uf.bo);
 	amdgpu_sync_free(&job->sync);
@@ -157,6 +157,7 @@
 	}
 
 err:
+	job->fence = fence;
 	amdgpu_job_free(job);
 	return fence;
 }