MySQL corrigindo lacunas de incremento automático em duas tabelas

ALTER TABLE table2
ADD FOREIGN KEY FK_IMAGE (id_image)
REFERENCES table1 (id_image)
ON DELETE CASCADE
ON UPDATE CASCADE;

SET @currentRow = 0;

UPDATE table1 INNER JOIN (
    SELECT @currentRow := @currentRow + 1 AS id_image_new, id_image AS id_image_old
    FROM table1
    ORDER BY id_image ASC) t on t.id_image_old = table1.id_image
SET table1.id_image = t.id_image_new;

ALTER TABLE table1 AUTO_INCREMENT = 1;