How to write goto stop label in mysql procedure like oracle?

[ENAMUL HAQUE]

Hello Sir,
I have user oracle procedure. But now we want to switch MySQL database with procedure. I am unable to declare stop label. Here is my oracle procedure..
how to convert MySQL procedure with stop label..

CREATE OR REPLACE PROCEDURE orap.dpr_mobiapps_reg_req_exe (
in_userid IN VARCHAR2,
out_message OUT VARCHAR2,
out_code OUT INTEGER
)
IS

BEGIN

IF in_userid IS NULL
THEN
out_code := 1;
out_message :='Please Enter Your User Id';
GOTO stop_level;
END IF;


<<stop_level>>
IF out_code = 0
THEN
COMMIT;
out_message := out_message;
ELSE
ROLLBACK;
out_code := 1;
out_message := out_message;
END IF;
END;
/

Please help me.....