drm/nouveau/mmu: shift wrapping bug in gf100_vm_map()

index 294cda3..b10c90a 100644
@@ -106,7 +106,7 @@ static void
 gf100_vm_map(struct nvkm_vma *vma, struct nvkm_gpuobj *pgt,
 	     struct nvkm_mem *mem, u32 pte, u32 cnt, u64 phys, u64 delta)
 {
-	u64 next = 1 << (vma->node->type - 8);
+	u64 next = 1ULL << (vma->node->type - 8);
 
 	phys  = gf100_vm_addr(vma, phys, mem->memtype, 0);
 	pte <<= 3;