That's not what the study says??

I don't have access to the full text, but it certainly doesn't state most homophobes display attraction to gay porn.

It says there is a correlation. If 5% of the population is gay and 10% of homophobes are gay, then homophobia is correlated with being gay.

But stating most homophobes are gay would require evidence that >50% are gay, not just that there exists a correlation.