kobject: should use kobject_put() in kset-example

We should call kobject_put() instead of kfree() if kobject_init_and_add()
returns an error, shouldn't we? Don't set up a bad example ;)

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/samples/kobject/kset-example.c b/samples/kobject/kset-example.c
index b0a1b4f..7395c0b 100644
--- a/samples/kobject/kset-example.c
+++ b/samples/kobject/kset-example.c
@@ -211,7 +211,7 @@
 	 */
 	retval = kobject_init_and_add(&foo->kobj, &foo_ktype, NULL, "%s", name);
 	if (retval) {
-		kfree(foo);
+		kobject_put(&foo->kobj);
 		return NULL;
 	}