Staging: ipack/bridges/tpci200: avoid kernel bug when uninstalling a device

Signed-off-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/ipack/bridges/tpci200.c

@@ -604,8 +604,8 @@ static int tpci200_slot_unregister(struct ipack_device *dev)
 	if (mutex_lock_interruptible(&tpci200->mutex))
 		return -ERESTARTSYS;
 
-	ipack_device_unregister(dev);
 	tpci200->slots[dev->slot].dev = NULL;
+	ipack_device_unregister(dev);
 	mutex_unlock(&tpci200->mutex);
 
 	return 0;