Prolly not going to then. I started a guide on steam about companion quests. I listed all the steps I did to get the journal updates and such.
If you haven't talked to the guy at the top of the tavern, do so. He's....well, I"m too lazy to put spoiler tags up. So just let Ifan talk to him. That dialogue sends you to Roost.
And Saccy is right. To get the most out of Ifan's dialogue, I went with "dwarf in Wrecker's" then "Hannag". He's really got two different things going on. Ifan's role in the Deathfog attack, and his current work as a Lone Wolf. So keep that in mind as you play.