[PATCH] PCI: insert_resource can succeed and return an error

If we start again, we can return an error even if we were successful.
Reset the result to 0 before beginning again.  Why don't we use a
tailcall here?

kernel/resource.c

@@ -335,6 +335,7 @@ int insert_resource(struct resource *parent, struct resource *new)
 	/* existing resource overlaps end of new resource */
 	if (next->end > new->end) {
 		parent = next;
+		result = 0;
 		goto begin;
 	}