He's going to win it regardless of where Portugal finish. If they go out tonight he'd still win it because he's scored the most goals in the CL for the team that's won it, and he's the one that converted the final goal in the shoot out - it therefore became all about him and what he did, even though he was below average in the final itself.
But anyway, you said Ronaldo winning it in the same summer Messi quits... what's Messi got to do with anything? It would be a big deal for the guys that compare Messi and Ronaldo when the truth is it's a foregone conclusion as to who's the better player.