There have been RPGs for which no errata was ever released... but only because the company that made them never even bothered to try making errata.
People used to play RPGs without errata included because the only way to get the errata was to buy a newer printing of the book.
But, like many things, along came an easier way to request and receive (but not actually an easier way to find the time to track down and implement) errata and people started to get more and more obsessed about it.
There never has been, and never will be, an RPG product produced that doesn't need errata.