[PATCH 2/2] drm/amdgpu: Fix an error code in kfd_mem_attach_dmabuf()

[Dan Carpenter]

If amdgpu_gem_prime_export() fails, then this code accidentally
returns zero/success instead of a negative error code.

Fixes: 190f2d7696c8 ("drm/amdgpu: Add DMA mapping of GTT BOs")
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
index 68109908a869..9b7a3f849a16 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
@@ -639,14 +639,16 @@ kfd_mem_attach_dmabuf(struct amdgpu_device *adev, struct 
kgd_mem *mem,
                      struct amdgpu_bo **bo)
 {
        struct drm_gem_object *gobj;
+       int ret;
 
        if (!mem->dmabuf) {
                mem->dmabuf = amdgpu_gem_prime_export(&mem->bo->tbo.base,
                        mem->alloc_flags & KFD_IOC_ALLOC_MEM_FLAGS_WRITABLE ?
                                DRM_RDWR : 0);
                if (IS_ERR(mem->dmabuf)) {
+                       ret = PTR_ERR(mem->dmabuf);
                        mem->dmabuf = NULL;
-                       return PTR_ERR(mem->dmabuf);
+                       return ret;
                }
        }
 
-- 
2.30.2