of: overlay: Make node skipping in init_overlay_changeset() clearer

Make it more clear that nodes without "__overlay__" subnodes are
skipped, by reverting the logic and using continue.
This also reduces indentation level.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Rob Herring <robh@kernel.org>

drivers/of/overlay.c

@@ -573,7 +573,9 @@ static int init_overlay_changeset(struct overlay_changeset *ovcs,
 	cnt = 0;
 	for_each_child_of_node(tree, node) {
 		overlay_node = of_get_child_by_name(node, "__overlay__");
-		if (overlay_node) {
+		if (!overlay_node)
+			continue;
+
 		fragment = &fragments[cnt];
 		fragment->overlay = overlay_node;
 		fragment->target = find_target_node(node);
@@ -585,7 +587,6 @@ static int init_overlay_changeset(struct overlay_changeset *ovcs,
 
 		cnt++;
 	}
-	}
 
 	/*
 	 * if there is a symbols fragment in ovcs->fragments[i] it is