usb: typec: silence a static checker warning

Smatch complains about a potential missing error code:

    drivers/usb/typec/port-mapper.c:168 typec_link_port()
    warn: missing error code 'ret'

This is a false positive and returning zero is intentional.  Let's
re-arrange the code to silence the warning and make the intent more
clear.
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/YHadaACH8Mq/10F7@mwandaSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/typec/port-mapper.c

@@ -157,15 +157,17 @@ int typec_link_port(struct device *port)
 {
 	struct device *connector;
 	struct port_node *node;
-	int ret = 0;
+	int ret;
 
 	node = create_port_node(port);
 	if (IS_ERR(node))
 		return PTR_ERR(node);
 
 	connector = find_connector(node);
-	if (!connector)
+	if (!connector) {
+		ret = 0;
 		goto remove_node;
+	}
 
 	ret = link_port(to_typec_port(connector), node);
 	if (ret)