!1756 [sync] PR-1742: cxgb4: fix use after free bugs caused by circular dependency problem

Merge Pull Request from: @openeuler-sync-bot 
 

Origin pull request: 
https://gitee.com/openeuler/kernel/pulls/1742 
 
PR sync from: Zhengchao Shao <shaozhengchao@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/TVEUUECSYUEZXJBL5E4A2HVG6OUZVDZZ/ 
 
https://gitee.com/src-openeuler/kernel/issues/I7QE3L 
 
Link:https://gitee.com/openeuler/kernel/pulls/1756 

Reviewed-by: Yue Haibing <yuehaibing@huawei.com> 
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com> 

drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c

@@ -1135,7 +1135,7 @@ void cxgb4_cleanup_tc_flower(struct adapter *adap)
 		return;
 
 	if (adap->flower_stats_timer.function)
-		del_timer_sync(&adap->flower_stats_timer);
+		timer_shutdown_sync(&adap->flower_stats_timer);
 	cancel_work_sync(&adap->flower_stats_work);
 	rhashtable_destroy(&adap->flower_tbl);
 	adap->tc_flower_initialized = false;