[PATCH] iommu: rockchip: Free domain on .domain_free

[Ezequiel Garcia]

IOMMU domain resource life is well-defined, managed
by .domain_alloc and .domain_free.

Therefore, domain-specific resources shouldn't be tied to
the device life, but instead to its domain.

Signed-off-by: Ezequiel Garcia <ezequ...@collabora.com>
---
 drivers/iommu/rockchip-iommu.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c
index 26290f310f90..e845bd01a1a2 100644
--- a/drivers/iommu/rockchip-iommu.c
+++ b/drivers/iommu/rockchip-iommu.c
@@ -979,13 +979,13 @@ static struct iommu_domain 
*rk_iommu_domain_alloc(unsigned type)
        if (!dma_dev)
                return NULL;
 
-       rk_domain = devm_kzalloc(dma_dev, sizeof(*rk_domain), GFP_KERNEL);
+       rk_domain = kzalloc(sizeof(*rk_domain), GFP_KERNEL);
        if (!rk_domain)
                return NULL;
 
        if (type == IOMMU_DOMAIN_DMA &&
            iommu_get_dma_cookie(&rk_domain->domain))
-               return NULL;
+               goto err_free_domain;
 
        /*
         * rk32xx iommus use a 2 level pagetable.
@@ -1020,6 +1020,8 @@ static struct iommu_domain 
*rk_iommu_domain_alloc(unsigned type)
 err_put_cookie:
        if (type == IOMMU_DOMAIN_DMA)
                iommu_put_dma_cookie(&rk_domain->domain);
+err_free_domain:
+       kfree(rk_domain);
 
        return NULL;
 }
@@ -1048,6 +1050,7 @@ static void rk_iommu_domain_free(struct iommu_domain 
*domain)
 
        if (domain->type == IOMMU_DOMAIN_DMA)
                iommu_put_dma_cookie(&rk_domain->domain);
+       kfree(rk_domain);
 }
 
 static int rk_iommu_add_device(struct device *dev)
-- 
2.22.0