MySQL: WHILE statement schema (Need to finish it)

schema.sql

DELIMITER $$
CREATE PROCEDURE fillPaisesNome()
BEGIN
	DECLARE paisesNoName INT;
	DECLARE controle INT;
	SET paisesNoName = (SELECT COUNT(*) FROM `io_paises` WHERE `io_paises`.`nome` IS NULL);
	SET controle = 0;

	WHILE controle < paisesNoName DO
		UPDATE `io_paises` AS `pais`
			SET `pais`.`nome` = (
				SELECT `trans`.`nome`
				FROM `io_paises_translation` AS `trans`
				WHERE `trans`.`id` = `pais`.`id`
			)
			WHERE `pais`.`nome` IS NULL;
		commit;
		SET controle = controle + 1;
	END WHILE;
END;
DELIMITER ;