tcp: remove unneeded variable 'err'

variable 'err' is unmodified after initalization,
so simply cleans up it and returns 0.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 31fa1c080f2876a5b62846054430c34a6cfdf7c5..b8af2fec5ad59a0ddd2590499e2c1e977646485c 100644 (file)
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2531,7 +2531,6 @@ int tcp_disconnect(struct sock *sk, int flags)
        struct inet_sock *inet = inet_sk(sk);
        struct inet_connection_sock *icsk = inet_csk(sk);
        struct tcp_sock *tp = tcp_sk(sk);
-       int err = 0;
        int old_state = sk->sk_state;
 
        if (old_state != TCP_CLOSE)
@@ -2612,7 +2611,7 @@ int tcp_disconnect(struct sock *sk, int flags)
        }
 
        sk->sk_error_report(sk);
-       return err;
+       return 0;
 }
 EXPORT_SYMBOL(tcp_disconnect);