drm/nouveau/platform: release IOMMU's mm upon exit

nvkm_mm_fini() was not called when exiting the driver, resulting in a
memory leak. Fix this.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

diff --git a/drivers/gpu/drm/nouveau/nouveau_platform.c b/drivers/gpu/drm/nouveau/nouveau_platform.c
index 3691982..f83aa12 100644 (file)
--- a/drivers/gpu/drm/nouveau/nouveau_platform.c
+++ b/drivers/gpu/drm/nouveau/nouveau_platform.c
@@ -152,6 +152,7 @@ static void nouveau_platform_remove_iommu(struct device *dev,
                                          struct nouveau_platform_gpu *gpu)
 {
        if (gpu->iommu.domain) {
+               nvkm_mm_fini(&gpu->iommu._mm);
                iommu_detach_device(gpu->iommu.domain, dev);
                iommu_domain_free(gpu->iommu.domain);
        }