virtio: fix error handling for debug builds

On error, virtqueue_add calls START_USE but not
END_USE. Thankfully that's normally empty anyway,
but might not be when debugging. Fix it up.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index 5ed228ddadba..e383ecdaca59 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -428,6 +428,7 @@ unmap_release:
         if (indirect)
                 kfree(desc);
 
+        END_USE(vq);
         return -EIO;
 }