Simple Question about CoC Return w/ No cash down

[Leigh Jones]

Just bought my first deal. Made an offer,  47 days later a tenant moved in. Woo! 

I paid for it by using HELOC funds for closing costs & 25% down payment, & I mortgaged 75%. Since I have no "cash" in it, is my CoC Return considered infinite?

Or would you all consider the Heloc portion of it the "cash"? 

Edited to add: The rent covers all mortgage, HELOC pmt, prop mgmt fee, plus some.