lib: When adding to front of list ensure we handle tail to

When inserting to the front of a list with listnode_add_head
if the list is empty, the tail will not be properly set and
subsuquent calls to insert/remove will cause the function
to crash.

Signed-off-by: Donald Sharp <sharpd@nvidia.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/lib/linklist.c b/lib/linklist.c
index 8519482885..d1b57084ef 100644
--- a/lib/linklist.c
+++ b/lib/linklist.c
@@ -98,9 +98,10 @@ void listnode_add_head(struct list *list, void *val)
 
 	node->next = list->head;
 
-	if (list->head == NULL)
+	if (list->head == NULL) {
 		list->head = node;
-	else
+		list->tail = node;
+	} else
 		list->head->prev = node;
 	list->head = node;