iommu: Do not call domain_alloc() in iommu_sva_domain_alloc()

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

Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/4-v4-ff5fb6b03bd1+288-iommu_virtio_domains_jgg@nvidia.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/iommu/iommu-sva.c b/drivers/iommu/iommu-sva.c
index 944daa0..1a51cfd 100644 (file)
--- a/drivers/iommu/iommu-sva.c
+++ b/drivers/iommu/iommu-sva.c
@@ -296,15 +296,12 @@ 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;
        domain->cookie_type = IOMMU_COOKIE_SVA;