We accidentally dereference "cb" if the kmalloc() fails.
Fixes: 451bc8eb8fe6 ("drm/amdgpu: fix PRT teardown on VM fini v3")
Signed-off-by: Dan Carpenter <[email protected]>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 0235d7933efd..45a1bcfc41f7 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -1518,7 +1518,7 @@ static void amdgpu_vm_add_prt_cb(struct amdgpu_device
*adev,
if (fence)
dma_fence_wait(fence, false);
- amdgpu_vm_prt_put(cb->adev);
+ amdgpu_vm_prt_put(adev);
} else {
cb->adev = adev;
if (!fence || dma_fence_add_callback(fence, &cb->cb,
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