ppp: release rtnl mutex when interface creation fails

[ Upstream commit 6faac63a6986f29ef39827f460edd3a5ba64ad5c ]

Add missing rtnl_unlock() in the error path of ppp_create_interface().

Fixes: 58a89ecaca53 ("ppp: fix lockdep splat in ppp_dev_uninit()")
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c
index 9a863c6a6a33aa7883f6fa105fca917ae177e25c..40b303ed63b75dd46ca525ece55ad6b2377b5748 100644 (file)
--- a/drivers/net/ppp/ppp_generic.c
+++ b/drivers/net/ppp/ppp_generic.c
@@ -2803,6 +2803,7 @@ static struct ppp *ppp_create_interface(struct net *net, int unit,
 
 out2:
        mutex_unlock(&pn->all_ppp_mutex);
+       rtnl_unlock();
        free_netdev(dev);
 out1:
        *retp = ret;