diff --git a/mm/cma.c b/mm/cma.c
index bfe9f53..6ce6e22 100644
--- a/mm/cma.c
+++ b/mm/cma.c
@@ -106,8 +106,10 @@
 
 	cma->bitmap = kzalloc(bitmap_size, GFP_KERNEL);
 
-	if (!cma->bitmap)
+	if (!cma->bitmap) {
+		cma->count = 0;
 		return -ENOMEM;
+	}
 
 	WARN_ON_ONCE(!pfn_valid(pfn));
 	zone = page_zone(pfn_to_page(pfn));