[9P]: Fix missing unlock before return in p9_mux_poll_start

Signed-off-by: Roel Kluin <12o3l@tiscali.nl>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 1 deletions

diff --git a/net/9p/mux.c b/net/9p/mux.c
index f14014793bed..c9f0805048e4 100644
--- a/net/9p/mux.c
+++ b/net/9p/mux.c
@@ -222,8 +222,10 @@ static int p9_mux_poll_start(struct p9_conn *m)
         }
 
         if (i >= ARRAY_SIZE(p9_mux_poll_tasks)) {
-                if (vptlast == NULL)
+                if (vptlast == NULL) {
+                        mutex_unlock(&p9_mux_task_lock);
                         return -ENOMEM;
+                }
 
                 P9_DPRINTK(P9_DEBUG_MUX, "put in proc %d\n", i);
                 list_add(&m->mux_list, &vptlast->mux_list);