Bluetooth: Remove unnecessary L2CAP channel state check

In l2cap_att_channel() we're only interested in the BT_CONNECTED state
so this state can directly be passed to l2cap_global_chan_by_scid().
This way there's no need to do any additional state check later.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>

net/bluetooth/l2cap_core.c

@@ -6394,16 +6394,13 @@ static void l2cap_att_channel(struct l2cap_conn *conn,
 {
 	struct l2cap_chan *chan;
 
-	chan = l2cap_global_chan_by_scid(0, L2CAP_CID_ATT,
+	chan = l2cap_global_chan_by_scid(BT_CONNECTED, L2CAP_CID_ATT,
 					 conn->src, conn->dst);
 	if (!chan)
 		goto drop;
 
 	BT_DBG("chan %p, len %d", chan, skb->len);
 
-	if (chan->state != BT_BOUND && chan->state != BT_CONNECTED)
-		goto drop;
-
 	if (chan->imtu < skb->len)
 		goto drop;