net: hns3: Add a check for client instance init state

If the client instance is initializd failed, we do not need to uninit it.
This patch adds a state check to check init state of client instance.

Fixes: 38caee9d ("net: hns3: Add support of the HNAE3 framework")
Signed-off-by: Fuyun Liang <liangfuyun1@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/hisilicon/hns3/hnae3.c

@@ -50,13 +50,22 @@ static int hnae3_match_n_instantiate(struct hnae3_client *client,
 	/* now, (un-)instantiate client by calling lower layer */
 	if (is_reg) {
 		ret = ae_dev->ops->init_client_instance(client, ae_dev);
-		if (ret)
+		if (ret) {
 			dev_err(&ae_dev->pdev->dev,
 				"fail to instantiate client\n");
-		return ret;
+			return ret;
+		}
+
+		hnae_set_bit(ae_dev->flag, HNAE3_CLIENT_INITED_B, 1);
+		return 0;
+	}
+
+	if (hnae_get_bit(ae_dev->flag, HNAE3_CLIENT_INITED_B)) {
+		ae_dev->ops->uninit_client_instance(client, ae_dev);
+
+		hnae_set_bit(ae_dev->flag, HNAE3_CLIENT_INITED_B, 0);
 	}
 
-	ae_dev->ops->uninit_client_instance(client, ae_dev);
 	return 0;
 }
 

drivers/net/ethernet/hisilicon/hns3/hnae3.h

@@ -52,6 +52,7 @@
 #define HNAE3_DEV_INITED_B			0x0
 #define HNAE3_DEV_SUPPORT_ROCE_B		0x1
 #define HNAE3_DEV_SUPPORT_DCB_B			0x2
+#define HNAE3_CLIENT_INITED_B			0x3
 
 #define HNAE3_DEV_SUPPORT_ROCE_DCB_BITS (BIT(HNAE3_DEV_SUPPORT_DCB_B) |\
 		BIT(HNAE3_DEV_SUPPORT_ROCE_B))