Bluetooth: ISO: Fix iso_sock_getsockopt for BT_DEFER_SETUP

BT_DEFER_SETUP shall be considered valid for all states except for
BT_CONNECTED as it is also used when initiated a connection rather then
only for BT_BOUND and BT_LISTEN.

Fixes: ccf74f23 ("Bluetooth: Add BTPROTO_ISO socket type")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

net/bluetooth/iso.c

@@ -1251,7 +1251,7 @@ static int iso_sock_getsockopt(struct socket *sock, int level, int optname,
 
 	switch (optname) {
 	case BT_DEFER_SETUP:
-		if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
+		if (sk->sk_state == BT_CONNECTED) {
 			err = -EINVAL;
 			break;
 		}