[PATCH v3 4/5] iommu: Do not call domain_alloc() in iommu_sva_domain_alloc()

[Jason Gunthorpe]

No driver implements SVA under domain_alloc() anymore, this is dead
code.

Reviewed-by: Lu Baolu <baolu...@linux.intel.com>
Signed-off-by: Jason Gunthorpe <j...@nvidia.com>
---
 drivers/iommu/iommu-sva.c | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)

diff --git a/drivers/iommu/iommu-sva.c b/drivers/iommu/iommu-sva.c
index 503c5d23c1ea27..b1cd32e665b61c 100644
--- a/drivers/iommu/iommu-sva.c
+++ b/drivers/iommu/iommu-sva.c
@@ -299,15 +299,12 @@ static struct iommu_domain *iommu_sva_domain_alloc(struct 
device *dev,
        const struct iommu_ops *ops = dev_iommu_ops(dev);
        struct iommu_domain *domain;
 
-       if (ops->domain_alloc_sva) {
-               domain = ops->domain_alloc_sva(dev, mm);
-               if (IS_ERR(domain))
-                       return domain;
-       } else {
-               domain = ops->domain_alloc(IOMMU_DOMAIN_SVA);
-               if (!domain)
-                       return ERR_PTR(-ENOMEM);
-       }
+       if (!ops->domain_alloc_sva)
+               return ERR_PTR(-EOPNOTSUPP);
+
+       domain = ops->domain_alloc_sva(dev, mm);
+       if (IS_ERR(domain))
+               return domain;
 
        domain->type = IOMMU_DOMAIN_SVA;
        mmgrab(mm);
-- 
2.43.0