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

[Huang Guobin]

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 <hul...@huawei.com>
Signed-off-by: Huang Guobin <huangguob...@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