From: Dinghao Liu <dinghao.liu@zju.edu.cn>
Date: Mon, 24 Aug 2020 13:58:31 +0800
Subject: net: systemport: Fix memleak in bcm_sysport_probe
Git-commit: 7ef1fc57301f3cef7201497aa27e89ccb91737fe
Patch-mainline: 5.9-rc4
References: networking-stable-20_09_11

When devm_kcalloc() fails, dev should be freed just
like what we've done in the subsequent error paths.

Fixes: 7b78be48a8eb6 ("net: systemport: Dynamically allocate number of TX rings")
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/net/ethernet/broadcom/bcmsysport.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/drivers/net/ethernet/broadcom/bcmsysport.c
+++ b/drivers/net/ethernet/broadcom/bcmsysport.c
@@ -2010,8 +2010,10 @@ static int bcm_sysport_probe(struct plat
 	priv->tx_rings = devm_kcalloc(&pdev->dev, txq,
 				      sizeof(struct bcm_sysport_tx_ring),
 				      GFP_KERNEL);
-	if (!priv->tx_rings)
-		return -ENOMEM;
+	if (!priv->tx_rings) {
+		ret = -ENOMEM;
+		goto err_free_netdev;
+	}
 
 	priv->is_lite = params->is_lite;
 	priv->num_rx_desc_words = params->num_rx_desc_words;