--- /dev/null
+From 2cedb283f5af950573157565f58636ac71b59152 Mon Sep 17 00:00:00 2001
+From: Sasha Levin <sashal@kernel.org>
+Date: Tue, 18 May 2021 22:11:08 +0800
+Subject: dmaengine: stedma40: add missing iounmap() on error in d40_probe()
+
+From: Yang Yingliang <yangyingliang@huawei.com>
+
+[ Upstream commit fffdaba402cea79b8d219355487d342ec23f91c6 ]
+
+Add the missing iounmap() before return from d40_probe()
+in the error handling case.
+
+Fixes: 8d318a50b3d7 ("DMAENGINE: Support for ST-Ericssons DMA40 block v3")
+Reported-by: Hulk Robot <hulkci@huawei.com>
+Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
+Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
+Link: https://lore.kernel.org/r/20210518141108.1324127-1-yangyingliang@huawei.com
+Signed-off-by: Vinod Koul <vkoul@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/dma/ste_dma40.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
+index 0fede051f4e1..e6d3ed1de374 100644
+--- a/drivers/dma/ste_dma40.c
++++ b/drivers/dma/ste_dma40.c
+@@ -3715,6 +3715,9 @@ failure:
+
+ kfree(base->lcla_pool.base_unaligned);
+
++ if (base->lcpa_base)
++ iounmap(base->lcpa_base);
++
+ if (base->phy_lcpa)
+ release_mem_region(base->phy_lcpa,
+ base->lcpa_size);
+--
+2.30.2
+