[PATCH] vfio: Use ERR_CAST() instead of open coding it

[Dan Carpenter <dan.carpenter@xxxxxxxxxx>]

It's a small cleanup to use ERR_CAST() here.

Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c
index 561084ab387f..6a49485eb49d 100644
--- a/drivers/vfio/vfio.c
+++ b/drivers/vfio/vfio.c
@@ -382,7 +382,7 @@ static struct vfio_group *vfio_create_group(struct iommu_group *iommu_group)
 	if (IS_ERR(dev)) {
 		vfio_free_group_minor(minor);
 		vfio_group_unlock_and_free(group);
-		return (struct vfio_group *)dev; /* ERR_PTR */
+		return ERR_CAST(dev);
 	}
 
 	group->minor = minor;