[MicroBob]

Stuff like this happens so frequently these days at lesser restaurants that I practically expect it now anyway.
If they get it right then they get a decent tip.

If it's screwed up somehow or comes out cold or whatever then that might come out of the tip but if they are still friendly enough or I see they have a zillion tables they are working really hard to try and cover I will usually tip them okay anyway.

At a nice restaurant where I'm paying a decent amount for the food and thus the tip as well I expect that they should be able to get it correct and this almost always is the case.
No nice restaurant I can think of would actually do something like this and not be super-apologetic for it without you having to bring it up.