[NETLINK]: Return err in netlink_connect.

This patch makes netlink_connect() return the value of err instead of 0.
It doesn't actually make any difference since the current implementation
of netlink_autobind() never fails.  But since we went to all this trouble
to check the return status of autobind, might as well return the correct
value :)
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@redhat.com>

net/netlink/af_netlink.c

@@ -386,7 +386,7 @@ static int netlink_connect(struct socket *sock, struct sockaddr *addr,
 		nlk->dst_groups = nladdr->nl_groups;
 	}
 
-	return 0;
+	return err;
 }
 
 static int netlink_getname(struct socket *sock, struct sockaddr *addr, int *addr_len, int peer)