ipc: close open coded spin lock calls

commit cf9d5d78d05bca96df7618dfc3a5ee4414dcae58 upstream.

Signed-off-by: Davidlohr Bueso <davidlohr.bueso@hp.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/ipc/msg.c b/ipc/msg.c
index 796b491..56bff33 100644
--- a/ipc/msg.c
+++ b/ipc/msg.c
@@ -216,7 +216,7 @@
 	INIT_LIST_HEAD(&msq->q_receivers);
 	INIT_LIST_HEAD(&msq->q_senders);
 
-	spin_unlock(&msq->q_perm.lock);
+	ipc_unlock_object(&msq->q_perm);
 	rcu_read_unlock();
 
 	return msq->q_perm.id;