I added about a 1/4 cup of Mercon V ATF to my PS reservoir.

Immediately realizing my mistake, I siphoned out all of the PS fluid and ATF
in the reservoir and refilled it with PS fluid, I then siphoned out all of
the fluid again and refilled it a second time with PS fluid, I then siphoned
it one last time and refilled it again.

Is there anything else I should do or am I good to go?

Thanks!

Joe