diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index f547db0a728fc..8bac3ce02609c 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -996,8 +996,10 @@ static int pci_register_host_bridge(struct pci_host_bridge *bridge)
 	resource_list_for_each_entry_safe(window, n, &resources) {
 		offset = window->offset;
 		res = window->res;
-		if (!res->flags && !res->start && !res->end)
+		if (!res->flags && !res->start && !res->end) {
+			release_resource(res);
 			continue;
+		}
 
 		list_move_tail(&window->node, &bridge->windows);