iommu/vtd: Replace acpi_bus_get_device()

Replace acpi_bus_get_device() that is going to be dropped with
acpi_fetch_acpi_dev().

No intentional functional impact.

Signed-off-by: Rafael J. Wysocki <[e-mail]>
Reviewed-by: Lu Baolu <[e-mail]>
Link: https://lore.kernel.org/r/1807113.tdWV9SEqCh@kreacher
Signed-off-by: Joerg Roedel <[e-mail]>

drivers/iommu/intel/dmar.c

···
 				       andd->device_name);
 				continue;
 			}
-			if (acpi_bus_get_device(h, &adev)) {
+			adev = acpi_fetch_acpi_dev(h);
+			if (!adev) {
 				pr_err("Failed to get device for ACPI object %s\n",
 				       andd->device_name);
 				continue;