The Judgement on Smeagol

[Orofacion of the Vanyar]

If Smeagol's spirit left ME, he wouldn't have met Eru, he'd have gone to the Houses of the Dead in Mandos.

Actually... no, he wouldn't. The Halls of Mandos are for elves, not hobbits. Smeagol's fate is that of men, and that fate is uncertain.

Even if men do go to Eru when they die, Eru wouldn't have to "try" to bring Smeagol around, he would just do it. He's god, he can do whatever he wants.