USB: digi_acceleport: Fix broken unthrottle.

This patch fixes a regression introduced in
39892da4.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Acked-by: Oliver Neukum <oliver@neukum.org>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/serial/digi_acceleport.c

@@ -898,16 +898,16 @@ static void digi_rx_unthrottle(struct tty_struct *tty)
 
 	spin_lock_irqsave(&priv->dp_port_lock, flags);
 
-	/* turn throttle off */
-	priv->dp_throttled = 0;
-	priv->dp_throttle_restart = 0;
-
 	/* restart read chain */
 	if (priv->dp_throttle_restart) {
 		port->read_urb->dev = port->serial->dev;
 		ret = usb_submit_urb(port->read_urb, GFP_ATOMIC);
 	}
 
+	/* turn throttle off */
+	priv->dp_throttled = 0;
+	priv->dp_throttle_restart = 0;
+
 	spin_unlock_irqrestore(&priv->dp_port_lock, flags);
 
 	if (ret)