net: hns3: check reset pending after FLR prepare

If there is a PF reset pending before FLR prepare, FLR's
preparatory work will not fail, but the FLR rebuild procedure
will fail for this pending. So this PF reset pending should
be handled in the FLR preparatory.

Fixes: 8627bded ("net: hns3: refactor the precedure of PF FLR")
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c

@@ -9859,7 +9859,7 @@ static void hclge_flr_prepare(struct hnae3_ae_dev *ae_dev)
 	set_bit(HCLGE_STATE_RST_HANDLING, &hdev->state);
 	hdev->reset_type = HNAE3_FLR_RESET;
 	ret = hclge_reset_prepare(hdev);
-	if (ret) {
+	if (ret || hdev->reset_pending) {
 		dev_err(&hdev->pdev->dev, "fail to prepare FLR, ret=%d\n",
 			ret);
 		if (hdev->reset_pending ||