llc: fix SAP reference counting w.r.t. socket handling

The SAP ref counter gets decremented twice when deleting a socket,
although for all but the first socket of a SAP the SAP ref counter was
incremented only once.

Signed-off-by: Octavian Purdila <opurdila@ixiacom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/llc/af_llc.c

@@ -197,10 +197,8 @@ static int llc_ui_release(struct socket *sock)
 		llc->laddr.lsap, llc->daddr.lsap);
 	if (!llc_send_disc(sk))
 		llc_ui_wait_for_disc(sk, sk->sk_rcvtimeo);
-	if (!sock_flag(sk, SOCK_ZAPPED)) {
-		llc_sap_put(llc->sap);
+	if (!sock_flag(sk, SOCK_ZAPPED))
 		llc_sap_remove_socket(llc->sap, sk);
-	}
 	release_sock(sk);
 	if (llc->dev)
 		dev_put(llc->dev);
@@ -352,7 +350,6 @@ static int llc_ui_bind(struct socket *sock, struct sockaddr *uaddr, int addrlen)
 		rc = -EBUSY; /* some other network layer is using the sap */
 		if (!sap)
 			goto out;
-		llc_sap_hold(sap);
 	} else {
 		struct llc_addr laddr, daddr;
 		struct sock *ask;