powerpc/vio: More fallout from dma_mapping_error API change

arch/powerpc/kernel/vio.c:533: error: too few arguments to function 'dma_mapping_error'
Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

arch/powerpc/kernel/vio.c

@@ -530,7 +530,7 @@ static dma_addr_t vio_dma_iommu_map_single(struct device *dev, void *vaddr,
 	}
 
 	ret = dma_iommu_ops.map_single(dev, vaddr, size, direction, attrs);
-	if (unlikely(dma_mapping_error(ret))) {
+	if (unlikely(dma_mapping_error(dev, ret))) {
 		vio_cmo_dealloc(viodev, roundup(size, IOMMU_PAGE_SIZE));
 		atomic_inc(&viodev->cmo.allocs_failed);
 	}