gre: fix goto statement typo

Fix typo: pnet_tap_faied.
Signed-off-by: William Tu <u9012063@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv4/ip_gre.c

@@ -1467,7 +1467,7 @@ static int __init ipgre_init(void)
 
 	err = register_pernet_device(&ipgre_tap_net_ops);
 	if (err < 0)
-		goto pnet_tap_faied;
+		goto pnet_tap_failed;
 
 	err = register_pernet_device(&erspan_net_ops);
 	if (err < 0)
@@ -1503,7 +1503,7 @@ static int __init ipgre_init(void)
 	unregister_pernet_device(&erspan_net_ops);
 pnet_erspan_failed:
 	unregister_pernet_device(&ipgre_tap_net_ops);
-pnet_tap_faied:
+pnet_tap_failed:
 	unregister_pernet_device(&ipgre_net_ops);
 	return err;
 }