The Dwarf-souls seem to have returned to stone where Aule made them. The Halls
of Mandos are part of Valinor, albeit on the westernmost side. Aule has his own
special section, probably because he was the one who built them.
According to the Sil, Dwarves think that Aule is putting them in 'cold storage'
for the End, when Arda will need soldiers to fight Melkor's return and builders
to rebuild Arda.
Gimli goes to Valinor alive- Aule certainly would want to see a Dwarf, his own
Children. The Dwarves of Belegost and Khazad-dum are also famous amongst the
Elves, who they bled and died with or for. And the spirrt of Durin, if the
Dwarf legends are true can also intercede somewhat, seeing that he's in Mandos
awaiting
resurrection.
There is but one task remaining in Arda-we,the Dragons of Valinor will make it happen.
Lone resident of the Republic of Gondor
PO-TA-TOE-S not PO -TAH-TOE-S!