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>

1 files changed, 1 insertions, 2 deletions

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 31fa1c080f28..b8af2fec5ad5 100644
--- 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);