commonlib/dt: Fix recursive call for _dt_find_node

Correctly call _dt_find_node recursively to avoid incorrect
re-initialization of addrcp and sizecp.

BUG=none
TEST=Test coverage can pass.

Change-Id: Icad075485f0a8a22138f1a0e1885405749ae5253
Signed-off-by: Kapil Porwal <kapilporwal@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/86029
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>

src/commonlib/device_tree.c

@@ -1074,7 +1074,7 @@ static struct device_tree_node *_dt_find_node(struct device_tree_node *parent,
 		list_insert_after(&found->list_node, &parent->children);
 	}
 
-	return dt_find_node(found, path + 1, addrcp, sizecp, create);
+	return _dt_find_node(found, path + 1, addrcp, sizecp, create);
 }
 
 /*