!1178 memstick: r592: Fix UAF bug in r592_remove due to race condition

Merge Pull Request from: @ci-robot 
 
PR sync from: Chen Zhongjin <chenzhongjin@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/7SX6VMPGMA422BLUDHM6SXV5PQWXROF3/ 
 
 
Link:https://gitee.com/openeuler/kernel/pulls/1178 

Reviewed-by: Xu Kuohai <xukuohai@huawei.com> 
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com> 

drivers/memstick/host/r592.c

@@ -828,7 +828,7 @@ static void r592_remove(struct pci_dev *pdev)
 	/* Stop the processing thread.
 	That ensures that we won't take any more requests */
 	kthread_stop(dev->io_thread);
-
+	del_timer_sync(&dev->detect_timer);
 	r592_enable_device(dev, false);
 
 	while (!error && dev->req) {