ceph: fix leak of monc mutex

Fix leak of monc mutex on ENOMEM or bad fsid when receiving new mon map.
Audited all other users.

Signed-off-by: Sage Weil <sage@newdream.net>

1 files changed, 3 insertions, 2 deletions

diff --git a/fs/ceph/mon_client.c b/fs/ceph/mon_client.c
index 1dd0dc258c50..a76da5e6dbdd 100644
--- a/fs/ceph/mon_client.c
+++ b/fs/ceph/mon_client.c
@@ -320,17 +320,18 @@ static void ceph_monc_handle_map(struct ceph_mon_client *monc,
         if (IS_ERR(monmap)) {
                 pr_err("problem decoding monmap, %d\n",
                        (int)PTR_ERR(monmap));
-                return;
+                goto out;
         }
 
         if (ceph_check_fsid(monc->client, &monmap->fsid) < 0) {
                 kfree(monmap);
-                return;
+                goto out;
         }
 
         client->monc.monmap = monmap;
         kfree(old);
 
+out:
         mutex_unlock(&monc->mutex);
         wake_up(&client->mount_wq);
 }