How to update and return the value in plsql (RETURNING Clause to Avoid Unnecessary SQL Statements)

PROCEDURE validate_prc (

    p_guid            VARCHAR2,

    p_invoice_number  OUT  VARCHAR2,

    p_cust_num        OUT  VARCHAR2,

    p_site_use_id     OUT  NUMBER,

    p_click_count     OUT  NUMBER

) IS

    PRAGMA autonomous_transaction;

BEGIN

UPDATE adv_coll_tbl

        SET click_count = click_count+1

WHERE  guid = p_guid

RETURNING

    invoice_number,

            customer_number,

            bill_to_site_use_id,

            click_count

INTO

    p_invoice_number,

            p_cust_num,

            p_site_use_id,

            p_click_count

;

IF SQL%FOUND THEN

dbms_output.put_line(' Success ');

ELSE

dbms_output.put_line(' Error ');

END IF;

END;