netns: simplify net_ns_init

The net_ns_init code can be simplified. No need to save error code
if it is only going to panic if it is set 4 lines later.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index 69d7549..b7292a2 100644 (file)
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -196,7 +196,6 @@ struct net *copy_net_ns(unsigned long flags, struct net *old_net)
 static int __init net_ns_init(void)
 {
        struct net_generic *ng;
-       int err;
 
 #ifdef CONFIG_NET_NS
        net_cachep = kmem_cache_create("net_namespace", sizeof(struct net),
@@ -216,15 +215,14 @@ static int __init net_ns_init(void)
        rcu_assign_pointer(init_net.gen, ng);
 
        mutex_lock(&net_mutex);
-       err = setup_net(&init_net);
+       if (setup_net(&init_net))
+               panic("Could not setup the initial network namespace");
 
        rtnl_lock();
        list_add_tail(&init_net.list, &net_namespace_list);
        rtnl_unlock();
 
        mutex_unlock(&net_mutex);
-       if (err)
-               panic("Could not setup the initial network namespace");
 
        return 0;
 }