Did I ruin my waterheater

[Hedgehog]

I just went outside to install the anode rod in my water heater to get ready for the next trip when I felt heat coming out of the drain hole. Well I guess I forgot to shut off the electric water heater switch when I left the last campground 3 weeks ago but I did drain the water. Did I damage the water heater or is it still good since it was warm inside? I don’t want to put water into it until the element cools off. It is the 12 gal waterheater in a 2016 montana.