[PATCH net] net: wilc1000: clean up resource in error path of init mon interface

From: Huang Guobin <huangguobin4@huawei.com>
To: <ajay.kathat@microchip.com>, <claudiu.beznea@microchip.com>,
	<kvalo@codeaurora.org>, <davem@davemloft.net>, <kuba@kernel.org>,
	<gregkh@linuxfoundation.org>
Cc: <linux-wireless@vger.kernel.org>, <netdev@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>
Subject: [PATCH net] net: wilc1000: clean up resource in error path of init mon interface
Date: Thu, 17 Sep 2020 08:30:19 -0400	[thread overview]
Message-ID: <20200917123019.206382-1-huangguobin4@huawei.com> (raw)

The wilc_wfi_init_mon_int() forgets to clean up resource when
register_netdevice() failed. Add the missed call to fix it.
And the return value of netdev_priv can't be NULL, so remove
the unnecessary error handling.

Fixes: 588713006ea4 ("staging: wilc1000: avoid the use of 'wilc_wfi_mon' static variable")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Huang Guobin <huangguobin4@huawei.com>
---
 drivers/net/wireless/microchip/wilc1000/mon.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/wireless/microchip/wilc1000/mon.c b/drivers/net/wireless/microchip/wilc1000/mon.c
index 358ac8601333..b5a1b65c087c 100644
--- a/drivers/net/wireless/microchip/wilc1000/mon.c
+++ b/drivers/net/wireless/microchip/wilc1000/mon.c
@@ -235,11 +235,10 @@ struct net_device *wilc_wfi_init_mon_interface(struct wilc *wl,
 
 	if (register_netdevice(wl->monitor_dev)) {
 		netdev_err(real_dev, "register_netdevice failed\n");
+		free_netdev(wl->monitor_dev);
 		return NULL;
 	}
 	priv = netdev_priv(wl->monitor_dev);
-	if (!priv)
-		return NULL;
 
 	priv->real_ndev = real_dev;
 
-- 
2.25.1

