Getting ready to set up new Mac - how do I safely unmount Time Machine from old computer?

Hello!

I am getting ready to set up my new Mac Mini. I've ready through Setup Assistant/Migration Assistant information but I want to make sure I remove my Time Machine drive properly. I see when I right click on the Time Machine drive that a sidebar menu pops up and I have the option to eject the disk. Before I do this I'm just checking to see if there's anything I need to watch out for - i.e. potential issues of any kind? Thank you in advance for any input!