iommu/virtio: Reverse arguments to list_add

commit fb3637a113349f53830f7d6ca45891b7192cd28f upstream.

Elsewhere in the file, there is a list_for_each_entry with
&vdev->resv_regions as the second argument, suggesting that
&vdev->resv_regions is the list head.  So exchange the
arguments on the list_add call to put the list head in the
second argument.

Fixes: 2a5a31487445 ("iommu/virtio: Add probe request")
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Link: https://lore.kernel.org/r/1588704467-13431-1-git-send-email-Julia.Lawall@inria.fr
Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/iommu/virtio-iommu.c b/drivers/iommu/virtio-iommu.c
index 6c340a4..60e659a 100644 (file)
--- a/drivers/iommu/virtio-iommu.c
+++ b/drivers/iommu/virtio-iommu.c
@@ -454,7 +454,7 @@ static int viommu_add_resv_mem(struct viommu_endpoint *vdev,
        if (!region)
                return -ENOMEM;
 
-       list_add(&vdev->resv_regions, &region->list);
+       list_add(&region->list, &vdev->resv_regions);
        return 0;
 }