If I hit someone with Eldritch Blasts with the pushback invocation does hitting a wall hurt at all?

@ChrisPerkinsDnD If I hit someone with multiple Eldritch Blasts w/ the pushback invocation, does hitting a wall hurt at all?

— Ryan Teague (@Red_Hot_Kick) August 23, 2016

I don't think being pushed against a bare wall would deal any appreciable damage. #WOTCstaff https://t.co/dCm1iKdM4R

— (((Chris Perkins))) (@ChrisPerkinsDnD) August 23, 2016