[PATCH] decnet: handle a failure in neigh_parms_alloc

While enhancing the neighbour code to handle multiple network
namespaces I noticed that decnet is assuming neigh_parms_alloc
will allways succeed, which is clearly wrong.  So handle the
failure.

Signed-off-by: Eric W. Biederman <redacted>
---
 net/decnet/dn_dev.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/net/decnet/dn_dev.c b/net/decnet/dn_dev.c
index 324eb47..f6a2b2a 100644
--- a/net/decnet/dn_dev.c
+++ b/net/decnet/dn_dev.c

@@ -1149,6 +1149,11 @@ struct dn_dev *dn_dev_create(struct net_device *dev, int *err)
 	}
 
 	dn_db->neigh_parms = neigh_parms_alloc(dev, &dn_neigh_table);
+	if (!dn_db->neigh_parms) {
+		dev->dn_ptr = NULL;
+		kfree(dn_db);
+		return NULL;
+	}
 
 	dn_dev_sysctl_register(dev, &dn_db->parms);
 

-- 
1.4.4.1.g278f