Even if a fire appears to be extinguished, there is always the chance that there is a hidden hot spot that can flare up again. Or that the apparent cause, as estimated by flight/cabin crew (well-trained - but not engineers) was just a symptom masking some other underlying problem or failure.
So you still land as soon as practicable.
Over the Atlantic - you also land as soon as practicable. "As soon as practicable" will take longer, and may involve more calculations - including the choice of "ditch in uncertain conditions vs. fall out of the sky in flames in certainty."
It seems like some people want to micromanage these events (after the fact) and parse the rules and options, or write new ones.
Any landing you walk away from is a good one. Any in-flight fire that is resolved with no casualties was resolved correctly.