If it's a "correct" maze with exactly one way to get from any one square to any other square (as Eller's mazes are), then it doesn't matter where your entry and

If it's a "correct" maze with exactly one way to get from any one square to any other square (as Eller's mazes are), then it doesn't matter where your entry and exit points are -- there's always one solution for any entry/exit pair you choose.