drm/msm: fix error path cleanup

If we fail to attach iommu, gpu->aspace could be IS_ERR()..

Signed-off-by: Rob Clark <robdclark@gmail.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c
index ffbff27600e0..6a887032c66a 100644
--- a/drivers/gpu/drm/msm/msm_gpu.c
+++ b/drivers/gpu/drm/msm/msm_gpu.c
@@ -718,7 +718,8 @@ void msm_gpu_cleanup(struct msm_gpu *gpu)
                         msm_gem_put_iova(gpu->rb->bo, gpu->aspace);
                 msm_ringbuffer_destroy(gpu->rb);
         }
-        if (gpu->aspace) {
+
+        if (!IS_ERR_OR_NULL(gpu->aspace)) {
                 gpu->aspace->mmu->funcs->detach(gpu->aspace->mmu,
                         NULL, 0);
                 msm_gem_address_space_put(gpu->aspace);