yam: fix possible memory leak in yam_init_driver

[ Upstream commit 98749b7188affbf2900c2aab704a8853901d1139 ]

If register_netdev(dev) fails, free_netdev(dev) needs
to be called, otherwise a memory leak will occur.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/hamradio/yam.c b/drivers/net/hamradio/yam.c
index 71cdef9fb56bc93874c1984c2c995343cd065a45..5ab53e9942f3052b16f9e1f867e63901341b67b1 100644 (file)
--- a/drivers/net/hamradio/yam.c
+++ b/drivers/net/hamradio/yam.c
@@ -1133,6 +1133,7 @@ static int __init yam_init_driver(void)
                err = register_netdev(dev);
                if (err) {
                        printk(KERN_WARNING "yam: cannot register net device %s\n", dev->name);
+                       free_netdev(dev);
                        goto error;
                }
                yam_devs[i] = dev;