Dear questioner,
here everybody saying anything without knowing all things,so dont be confuse,if u like to trust in my words that read carefully.if ur company wiil provide to u NOC with cancelled the visa,then u can come any company immadiatly,but during the apply visa that time u should show ur NOC.this wil be applicable only if u don have any police case or anythings againist of the qatari govt.law.