linux-kernel - [PATCH] net: hns: Add missing fwnode_handle_put in hns_mac

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Message-ID: <20220421055344.8102-1-wupeng58@huawei.com>
Date:   Thu, 21 Apr 2022 05:53:44 +0000
From:   Peng Wu <wupeng58@...wei.com>
To:     <yisen.zhuang@...wei.com>, <salil.mehta@...wei.com>,
        <huangguangbin2@...wei.com>, <shenyang39@...wei.com>,
        <lipeng321@...wei.com>
CC:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <wupeng58@...wei.com>, <liwei391@...wei.com>
Subject: [PATCH] net: hns: Add missing fwnode_handle_put in hns_mac_init

In one of the error paths of the device_for_each_child_node() loop
in hns_mac_init, add missing call to fwnode_handle_put.

Signed-off-by: Peng Wu <wupeng58@...wei.com>
---
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c
index 7edf8569514c..928d934cb21a 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c
@@ -1065,19 +1065,23 @@ int hns_mac_init(struct dsaf_device *dsaf_dev)
 	device_for_each_child_node(dsaf_dev->dev, child) {
 		ret = fwnode_property_read_u32(child, "reg", &port_id);
 		if (ret) {
+			fwnode_handle_put(child);
 			dev_err(dsaf_dev->dev,
 				"get reg fail, ret=%d!\n", ret);
 			return ret;
 		}
 		if (port_id >= max_port_num) {
+			fwnode_handle_put(child);
 			dev_err(dsaf_dev->dev,
 				"reg(%u) out of range!\n", port_id);
 			return -EINVAL;
 		}
 		mac_cb = devm_kzalloc(dsaf_dev->dev, sizeof(*mac_cb),
 				      GFP_KERNEL);
-		if (!mac_cb)
+		if (!mac_cb) {
+			fwnode_handle_put(child);
 			return -ENOMEM;
+		}
 		mac_cb->fw_port = child;
 		mac_cb->mac_id = (u8)port_id;
 		dsaf_dev->mac_cb[port_id] = mac_cb;
-- 
2.17.1