[BLUETOOTH]: put_device before device_del fix

Because of workqueue delay, the put_device could be called before
device_del, so move it to del_conn.

Signed-off-by: Dave Young <hidave.darkstar@gmail.com> 
Signed-off-by: David S. Miller <davem@davemloft.net>

net/bluetooth/hci_conn.c

@@ -259,22 +259,14 @@ int hci_conn_del(struct hci_conn *conn)
 	}
 
 	tasklet_disable(&hdev->tx_task);
-
-	hci_conn_del_sysfs(conn);
-
 	hci_conn_hash_del(hdev, conn);
 	if (hdev->notify)
 		hdev->notify(hdev, HCI_NOTIFY_CONN_DEL);
-
 	tasklet_enable(&hdev->tx_task);
-
 	skb_queue_purge(&conn->data_q);
-
+	hci_conn_del_sysfs(conn);
 	hci_dev_put(hdev);
 
-	/* will free via device release */
-	put_device(&conn->dev);
-
 	return 0;
 }
 

net/bluetooth/hci_sysfs.c

@@ -320,6 +320,7 @@ static void del_conn(struct work_struct *work)
 {
 	struct hci_conn *conn = container_of(work, struct hci_conn, work);
 	device_del(&conn->dev);
+	put_device(&conn->dev);
 }
 
 void hci_conn_del_sysfs(struct hci_conn *conn)