6lowpan: reassembly: fix return of init function

This patch adds a missing return after fragmentation init. Otherwise we
register a sysctl interface and deregister it afterwards which makes no
sense.

Signed-off-by: Alexander Aring <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

net/ieee802154/reassembly.c

···
 
 	ret = lowpan_frags_sysctl_register();
 	if (ret)
-		goto out;
+		return ret;
 
 	ret = register_pernet_subsys(&lowpan_frags_ops);
 	if (ret)
···
 	lowpan_frags.frag_expire = lowpan_frag_expire;
 	lowpan_frags.secret_interval = 10 * 60 * HZ;
 	inet_frags_init(&lowpan_frags);
+
+	return ret;
 err_pernet:
 	lowpan_frags_sysctl_unregister();
-out:
 	return ret;
 }