Bluetooth: Fix bad locking balance

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 1f9364f..4597689 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -741,9 +741,9 @@
 					&chan->conf_state)) {
 				/* l2cap_chan_close() calls list_del(chan)
 				 * so release the lock */
-				read_unlock_bh(&conn->chan_lock);
+				read_unlock(&conn->chan_lock);
 				l2cap_chan_close(chan, ECONNRESET);
-				read_lock_bh(&conn->chan_lock);
+				read_lock(&conn->chan_lock);
 				bh_unlock_sock(sk);
 				continue;
 			}