Bluetooth: Classic: Fix assert when aborting initiating SCO connection

return an error instead of assert

Signed-off-by: Mark Wang <[email protected]>

Author: MarkWangChinese

subsys/bluetooth/host/conn.c

@@ -1883,6 +1883,9 @@ int bt_conn_disconnect(struct bt_conn *conn, uint8_t reason)
 #if defined(CONFIG_BT_CLASSIC)
 		else if (conn->type == BT_CONN_TYPE_BR) {
 			return bt_hci_connect_br_cancel(conn);
+		} else if (conn->type == BT_CONN_TYPE_SCO) {
+			/* There is no HCI cmd to cancel SCO connecting from spec */
+			return -EPROTONOSUPPORT;
 		}
 #endif /* CONFIG_BT_CLASSIC */
 		else {