net: sctp: simplify sctp_get_port

No need to have an extra ret variable when we directly can return
the value of sctp_get_port_local().

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/sctp/socket.c

@@ -6036,7 +6036,6 @@ fail:
  */
 static int sctp_get_port(struct sock *sk, unsigned short snum)
 {
-	long ret;
 	union sctp_addr addr;
 	struct sctp_af *af = sctp_sk(sk)->pf->af;
 
@@ -6045,9 +6044,7 @@ static int sctp_get_port(struct sock *sk, unsigned short snum)
 	addr.v4.sin_port = htons(snum);
 
 	/* Note: sk->sk_num gets filled in if ephemeral port request. */
-	ret = sctp_get_port_local(sk, &addr);
-
-	return ret ? 1 : 0;
+	return !!sctp_get_port_local(sk, &addr);
 }
 
 /*