usb: xhci-mtk: fix list_del warning when enable list debug

There is warning of 'list_del corruption' when enable list debug
(CONFIG_DEBUG_LIST=y), fix it by using list_del_init()

Fixes: 4ce18666 ("usb: xhci-mtk: Do not use xhci's virt_dev in drop_endpoint")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: NChunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/20211209025422.17108-1-chunfeng.yun@mediatek.comSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/xhci-mtk-sch.c

@@ -781,7 +781,7 @@ int xhci_mtk_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev)
 
 	ret = xhci_check_bandwidth(hcd, udev);
 	if (!ret)
-		INIT_LIST_HEAD(&mtk->bw_ep_chk_list);
+		list_del_init(&mtk->bw_ep_chk_list);
 
 	return ret;
 }