Revert "serial/sunsu: add missing of_node_put()"

This reverts commit 20d8e861.

As David Miller points out, it's wrong.
Reported-by: NDavid Miller <davem@davemloft.net>
Cc: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/sunsu.c

@@ -1394,32 +1394,22 @@ static inline struct console *SUNSU_CONSOLE(void)
 static enum su_type su_get_type(struct device_node *dp)
 {
 	struct device_node *ap = of_find_node_by_path("/aliases");
-	enum su_type rc = SU_PORT_PORT;
 
 	if (ap) {
-		struct device_node *tmp;
 		const char *keyb = of_get_property(ap, "keyboard", NULL);
 		const char *ms = of_get_property(ap, "mouse", NULL);
 
 		if (keyb) {
-			tmp = of_find_node_by_path(keyb);
-			if (tmp && dp == tmp){
-				rc = SU_PORT_KBD;
-				goto out;
-			}
+			if (dp == of_find_node_by_path(keyb))
+				return SU_PORT_KBD;
 		}
 		if (ms) {
-			tmp = of_find_node_by_path(ms);
-			if (tmp && dp == tmp){
-				rc = SU_PORT_MS;
-				goto out;
-			}
+			if (dp == of_find_node_by_path(ms))
+				return SU_PORT_MS;
 		}
 	}
 
-out:
-	of_node_put(ap);
-	return rc;
+	return SU_PORT_PORT;
 }
 
 static int su_probe(struct platform_device *op)