[NET]: kfree cleanup

From: Jesper Juhl <jesper.juhl@gmail.com>

This is the net/ part of the big kfree cleanup patch.

Remove pointless checks for NULL prior to calling kfree() in net/.

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Arnaldo Carvalho de Melo <acme@conectiva.com.br>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index cf94372..e6b0e39 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -756,8 +756,7 @@
 	}
 	ip6_tnl_dst_store(t, dst);
 
-	if (opt)
-		kfree(opt);
+	kfree(opt);
 
 	t->recursion--;
 	return 0;
@@ -766,8 +765,7 @@
 	dst_link_failure(skb);
 tx_err_dst_release:
 	dst_release(dst);
-	if (opt)
-		kfree(opt);
+	kfree(opt);
 tx_err:
 	stats->tx_errors++;
 	stats->tx_dropped++;