ipv6: drop unneeded goto

Delete jump to a label on the next line, when that label is not
used elsewhere.

A simplified version of the semantic patch that makes this change is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@r@
identifier l;
@@

-if (...) goto l;
-l:
// </smpl>

Also remove the unnecessary ret variable.
Signed-off-by: NJulia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv6/raw.c

@@ -1327,13 +1327,7 @@ static struct inet_protosw rawv6_protosw = {
 
 int __init rawv6_init(void)
 {
-	int ret;
-
-	ret = inet6_register_protosw(&rawv6_protosw);
-	if (ret)
-		goto out;
-out:
-	return ret;
+	return inet6_register_protosw(&rawv6_protosw);
 }
 
 void rawv6_exit(void)