drm/amdkfd: fix dma_buf reference leak in get_dmabuf_info

When kzalloc fails for metadata_buffer in
amdgpu_amdkfd_get_dmabuf_info(), the function returns -ENOMEM directly
without calling dma_buf_put(), leaking the dma_buf reference obtained
earlier via dma_buf_get().

Fix both issues by:
- Adding an error check after the first amdgpu_bo_get_metadata() call
- Replacing the direct return with r = -ENOMEM and goto out_put to
  ensure dma_buf_put() is called on all error paths

Fixes: f54ce9e8cbd3 ("drm/amdkfd: Let driver decide buffer size at AMDKFD_IOC_GET_DMABUF_INFO ioctl")
Signed-off-by: Haojie Li <lihaojie@kylinos.cn>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit ffa699553332f8caf8688d312279ddcea9e3c141)
Cc: stable@vger.kernel.org

0 files changed, 0 insertions, 0 deletions