Oil Leak 98 Dodge Neon

I’ve got a 1998 Dodge Neon with 120K miles. I replaced the head gasket in July, no leaks and everything was fine until now. There’s a flowing oil leak with a little bit of antifreeze coming from the left top corner, right underneath the power steering reservoir (it’s not only a leak, it actually streams out after starting, as soon as the oil circulates to the top of the engine). Any ideas?