NFS: 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 drop the unnecessary ret variable.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>

fs/nfs/nfs4idmap.c

@@ -494,12 +494,7 @@ nfs_idmap_delete(struct nfs_client *clp)
 
 int nfs_idmap_init(void)
 {
-	int ret;
-	ret = nfs_idmap_init_keyring();
-	if (ret != 0)
-		goto out;
-out:
-	return ret;
+	return nfs_idmap_init_keyring();
 }
 
 void nfs_idmap_quit(void)