staging: ft1000: Fix memory leak when polling fail.

Signed-off-by: Marek Belisko <marek.belisko@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/ft1000/ft1000-usb/ft1000_usb.c

@@ -200,7 +200,8 @@ static int ft1000_probe(struct usb_interface *interface, const struct usb_device
             {
                 kthread_stop(pft1000info->pPollThread );
             }
-            return 0;
+		ret = -EIO;
+		goto err_load;
         }
         msleep(100);
         DEBUG("ft1000_probe::Waiting for Card Ready\n");