netdev - [PATCH net-next] net: fman: memac: Uninitialized variable on error path

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Message-ID: <Ywd2X6gdKmTfYBxD@kili>
Date:   Thu, 25 Aug 2022 16:17:19 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Madalin Bucur <madalin.bucur@....com>,
        Sean Anderson <sean.anderson@...o.com>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Camelia Groza <camelia.groza@....com>, netdev@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: [PATCH net-next] net: fman: memac: Uninitialized variable on error
 path

The "fixed_link" is only allocated sometimes but it's freed
unconditionally in the error handling.  Set it to NULL so we don't free
uninitialized data.

Fixes: 9ea4742a55ca ("net: fman: Configure fixed link in memac_initialization")
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
---
 drivers/net/ethernet/freescale/fman/mac.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/freescale/fman/mac.c b/drivers/net/ethernet/freescale/fman/mac.c
index c376b9bf657d..f9a3f85760fb 100644
--- a/drivers/net/ethernet/freescale/fman/mac.c
+++ b/drivers/net/ethernet/freescale/fman/mac.c
@@ -389,7 +389,7 @@ static int memac_initialization(struct mac_device *mac_dev,
 {
 	int			 err;
 	struct fman_mac_params	 params;
-	struct fixed_phy_status *fixed_link;
+	struct fixed_phy_status *fixed_link = NULL;
 
 	mac_dev->set_promisc		= memac_set_promiscuous;
 	mac_dev->change_addr		= memac_modify_mac_address;
-- 
2.35.1