USB: Deref URB after usbmon is done with it

I haven't personally run across an oops because of this, but I feel safer
with this fix in place.
Signed-off-by: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/core/hcd.c

@@ -1018,8 +1018,8 @@ int usb_hcd_submit_urb (struct urb *urb, gfp_t mem_flags)
 		atomic_dec (&urb->use_count);
 		if (urb->reject)
 			wake_up (&usb_kill_urb_queue);
-		usb_put_urb (urb);
 		usbmon_urb_submit_error(&hcd->self, urb, status);
+		usb_put_urb (urb);
 	}
 	return status;
 }