vdpa: Use simpler version of ida allocation

vdpa doesn't have any specific need to define start and end range of the
device index.
Hence use the simper version of the ida allocator.

Signed-off-by: Parav Pandit <[email protected]>
Reviewed-by: Eli Cohen <[email protected]>
Acked-by: Jason Wang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Michael S. Tsirkin <[email protected]>

drivers/vdpa/vdpa.c

@@ -89,7 +89,7 @@ struct vdpa_device *__vdpa_alloc_device(struct device *parent,
 	if (!vdev)
 		goto err;
 
-	err = ida_simple_get(&vdpa_index_ida, 0, 0, GFP_KERNEL);
+	err = ida_alloc(&vdpa_index_ida, GFP_KERNEL);
 	if (err < 0)
 		goto err_ida;