net: hns3: Fix a memory leak in an error handling path in 'hclge_handle_error_info_log()'

mainline inclusion
from mainline-master
commit b40d7af7
category: bugfix
bugzilla: 173966
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b40d7af798a0a459d65bd95f34e3dff004eb554a

----------------------------------------------------------------------

If this 'kzalloc()' fails we must free some resources as in all the other
error handling paths of this function.

Fixes: 2e2deee7 ("net: hns3: add the RAS compatibility adaptation solution")
Signed-off-by: NChristophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Jiaran Zhang <zhangjiaran@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
Reviewed-by: NYongxin Li <liyongxin1@huawei.com>
Signed-off-by: NJunxin Chen <chenjunxin1@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

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

@@ -2330,8 +2330,10 @@ int hclge_handle_error_info_log(struct hnae3_ae_dev *ae_dev)
 	buf_size = buf_len / sizeof(u32);
 
 	desc_data = kzalloc(buf_len, GFP_KERNEL);
-	if (!desc_data)
-		return -ENOMEM;
+	if (!desc_data) {
+		ret = -ENOMEM;
+		goto err_desc;
+	}
 
 	buf = kzalloc(buf_len, GFP_KERNEL);
 	if (!buf) {