MySql cursor return first row - mysql

Question

I been work in a procedure with MySql to get an overall of sales of all offices in a date range gives by the user using a cursor, but only return the first office in the table.
Here's the table with offices:
SELECT DISTINCT
(num_suc_bsale)
FROM
documentos_historico
WHERE
num_suc_bsale IS NOT NULL
ORDER BY num_suc_bsale ASC
# num_suc_bsale
1
2
3
4
5
6
7
8
9
10
11
12
15
And this is the procedure:
CREATE PROCEDURE `ResumenVentasGeneralSucursal`(fecha_inicio DATE, fecha_fin DATE)
BEGIN
DECLARE fecha_inicio DATE DEFAULT fecha_inicio;
DECLARE fecha_fin DATE DEFAULT fecha_fin;
DECLARE total_bol INT default 0;
DECLARE total_fact INT default 0;
DECLARE total_nota_credito INT default 0;
DECLARE total INT DEFAULT 0;
DECLARE prom DOUBLE DEFAULT 0;
DECLARE suc_fetch INT;
DECLARE done INT DEFAULT FALSE;
DECLARE cursor_1 CURSOR FOR
SELECT DISTINCT(num_suc_bsale)
FROM documentos_historico
WHERE num_suc_bsale IS NOT NULL
ORDER BY num_suc_bsale DESC;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;
DROP TABLE IF EXISTS resumen_ventas_gen;
CREATE TEMPORARY TABLE resumen_ventas_gen(id int not null auto_increment primary key,total_venta INT, total_boleta INT, total_factura INT, total_nc INT, promedio DOUBLE, mes DATE, sucursal INT);
OPEN cursor_1;
suc_loop: LOOP
FETCH cursor_1 INTO suc_fetch;
IF done THEN
LEAVE suc_loop;
END IF;
WHILE fecha_inicio <= fecha_fin DO
SET total_bol = (SELECT SUM(CASE WHEN tipo_documento = 22 THEN total_venta ELSE 0 END) as total_boleta FROM documentos_historico WHERE num_suc_bsale = suc_fetch AND DATE_FORMAT(fecha_generacion_bsale, '%Y-%m') = DATE_FORMAT(fecha_inicio, '%Y-%m'));
SET total_fact = (SELECT SUM(CASE WHEN tipo_documento = 5 THEN total_venta ELSE 0 END) as total_factura FROM documentos_historico WHERE num_suc_bsale = suc_fetch AND DATE_FORMAT(fecha_generacion_bsale, '%Y-%m') = DATE_FORMAT(fecha_inicio, '%Y-%m'));
SET total_nota_credito = (SELECT SUM(CASE WHEN tipo_documento = 2 THEN total_venta ELSE 0 END) as total_credito FROM documentos_historico WHERE num_suc_bsale = suc_fetch AND DATE_FORMAT(fecha_generacion_bsale, '%Y-%m') = DATE_FORMAT(fecha_inicio, '%Y-%m'));
SET total = (SELECT SUM(total_venta) as total_venta FROM documentos_historico WHERE num_suc_bsale = suc_fetch AND DATE_FORMAT(fecha_generacion_bsale, '%Y-%m') = DATE_FORMAT(fecha_inicio, '%Y-%m'));
SET prom = (SELECT AVG(total_venta) as promedio FROM documentos_historico WHERE num_suc_bsale = suc_fetch AND DATE_FORMAT(fecha_generacion_bsale, '%Y-%m') = DATE_FORMAT(fecha_inicio, '%Y-%m'));
INSERT INTO resumen_ventas_gen(total_venta, total_boleta, total_factura, total_nc, promedio, mes, sucursal) VALUES(total, total_bol, total_fact, total_nota_credito, prom, fecha_inicio, suc_fetch);
SET fecha_inicio = fecha_inicio + INTERVAL 1 MONTH;
END WHILE;
END LOOP suc_loop;
CLOSE cursor_1;
SELECT
*
FROM
resumen_ventas_gen;
END
I don't know if I miss something in the cursor or something like that.
Any help would be appriciated.