usb: gadget: gadgetfs: use after free in dev_release()

The call to put_dev() releases "dev".  Hopefully, we don't need to set
the state to STATE_DEV_DISABLED anyway so I have removed those lines.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/gadget/inode.c

@@ -1270,10 +1270,6 @@ dev_release (struct inode *inode, struct file *fd)
 	dev->buf = NULL;
 	put_dev (dev);
 
-	/* other endpoints were all decoupled from this device */
-	spin_lock_irq(&dev->lock);
-	dev->state = STATE_DEV_DISABLED;
-	spin_unlock_irq(&dev->lock);
 	return 0;
 }