mptcp: sockopt: drop redundant tcp_getsockopt

tcp_getsockopt() is called twice in mptcp_getsockopt_first_sf_only(), which
makes the code a bit redundant. The first call to tcp_getsockopt() when the
first subflow exists can be replaced by going to a new label "get" before
the second call.

Signed-off-by: Geliang Tang <[email protected]>

Author: Geliang Tang

net/mptcp/sockopt.c

@@ -914,17 +914,16 @@ static int mptcp_getsockopt_first_sf_only(struct mptcp_sock *msk, int level, int
 
 	lock_sock(sk);
 	ssk = msk->first;
-	if (ssk) {
-		ret = tcp_getsockopt(ssk, level, optname, optval, optlen);
-		goto out;
-	}
+	if (ssk)
+		goto get;
 
 	ssk = __mptcp_nmpc_sk(msk);
 	if (IS_ERR(ssk)) {
 		ret = PTR_ERR(ssk);
 		goto out;
 	}
 
+get:
 	ret = tcp_getsockopt(ssk, level, optname, optval, optlen);
 
 out: