appletalk: Set error code if register_snap_client failed
authorYueHaibing <yuehaibing@huawei.com>
Tue, 30 Apr 2019 11:34:08 +0000 (19:34 +0800)
committerDavid S. Miller <davem@davemloft.net>
Tue, 30 Apr 2019 15:09:28 +0000 (11:09 -0400)
commitc93ad1337ad06a718890a89cdd85188ff9a5a5cc
treef77828bbcf40ea900a21c40ef914dd085038fa12
parentf949a12fd697479f68d99dc65e9bbab68ee49043
appletalk: Set error code if register_snap_client failed

If register_snap_client fails in atalk_init,
error code should be set, otherwise it will
triggers NULL pointer dereference while unloading
module.

Fixes: 9804501fa122 ("appletalk: Fix potential NULL pointer dereference in unregister_snap_client")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/appletalk/ddp.c