image_id is leaked if the parent happens to have been recorded already.
Fix it.

Signed-off-by: Ilya Dryomov <[email protected]>
---
 drivers/block/rbd.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index d99aa81774f8..adedb393b374 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -4072,6 +4072,8 @@ static int rbd_dev_v2_parent_info(struct rbd_device 
*rbd_dev)
                parent_spec->snap_id = snap_id;
                rbd_dev->parent_spec = parent_spec;
                parent_spec = NULL;     /* rbd_dev now owns this */
+       } else {
+               kfree(image_id);
        }
 
        /*
-- 
1.7.10.4

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