Index: uspace/lib/c/generic/pci.c
===================================================================
--- uspace/lib/c/generic/pci.c	(revision 14a014f216f3cb36418a95d532172cb779c1dc7c)
+++ uspace/lib/c/generic/pci.c	(revision 77592a765b7f8b011cb529201c1e9643e0381e73)
@@ -163,7 +163,10 @@
 
 		alloc_size = act_size;
-		ids = realloc(ids, alloc_size);
-		if (ids == NULL)
+		service_id_t *tmp = realloc(ids, alloc_size);
+		if (tmp == NULL) {
+			free(ids);
 			return ENOMEM;
+		}
+		ids = tmp;
 	}