drm/virtio: Fix double free on probe failure
The virtio_gpu_init() will free vgdev and vgdev->vbufs on failure. But such failure will be caught by virtio_gpu_probe() and then virtio_gpu_release() will be called to do some cleanup which will free vgdev and vgdev->vbufs again. So let's set dev->dev_private to NULL to avoid double free. Signed-off-by: Xie Yongji <xieyongji@bytedance.com> Link: http://patchwork.freedesktop.org/patch/msgid/20210517084913.403-2-xieyongji@bytedance.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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