From: Yang Yingliang <yangyingliang@huawei.com>
Date: Wed, 4 Jan 2023 17:57:02 +0800
Subject: [PATCH] iommu/exynos: Fix error handling in exynos_iommu_init()
References: bsc#1012628
Patch-mainline: 6.2.3
Git-commit: 53719876e064643a6e58b5e6067a149a0fd191ec

[ Upstream commit 53719876e064643a6e58b5e6067a149a0fd191ec ]

If platform_driver_register() fails, it don't need unregister and call
kmem_cache_free() to free the memory allocated before calling register.

Fixes: bbc4d205d93f ("iommu/exynos: Fix driver initialization sequence")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Link: https://lore.kernel.org/r/20230104095702.2591122-1-yangyingliang@huawei.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/iommu/exynos-iommu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index b0cde221..c1d579c2 100644
--- a/drivers/iommu/exynos-iommu.c
+++ b/drivers/iommu/exynos-iommu.c
@@ -1446,7 +1446,7 @@ static int __init exynos_iommu_init(void)
 
 	return 0;
 err_reg_driver:
-	platform_driver_unregister(&exynos_sysmmu_driver);
+	kmem_cache_free(lv2table_kmem_cache, zero_lv2_table);
 err_zero_lv2:
 	kmem_cache_destroy(lv2table_kmem_cache);
 	return ret;
-- 
2.35.3