[PATCH v2] of: dynamic: fix memory leak related to properties of __of_node_dup

[Lixin Wang]

If a node with no properties is dynamically added, then a property is
dynamically added to the node, then the property is dynamically removed,
the result will be node->properties == NULL and node->deadprops != NULL.

Signed-off-by: Lixin Wang <alan.1.wang@xxxxxxxxxxxxxxx>
---
v1:
 * Change the description of this patch as suggested by Frank Rowand.

 drivers/of/dynamic.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/of/dynamic.c b/drivers/of/dynamic.c
index 301b6db..465d43b 100644
--- a/drivers/of/dynamic.c
+++ b/drivers/of/dynamic.c
@@ -335,6 +335,10 @@ void of_node_release(struct kobject *kobj)
 	if (!of_node_check_flag(node, OF_DYNAMIC))
 		return;
 
+	if (!prop) {
+		prop = node->deadprops;
+		node->deadprops = NULL;
+	}
 	while (prop) {
 		struct property *next = prop->next;
 		kfree(prop->name);
-- 
2.6.2