[PATCH 4.19 166/346] dmaengine: mv_xor_v2: Fix error return code in mv_xor_v2_probe()

[Greg Kroah-Hartman]

From: Zhihao Cheng <chengzhih...@huawei.com>

[ Upstream commit c95e6515a8c065862361f7e0e452978ade7f94ec ]

Return the corresponding error code when first_msi_entry() returns
NULL in mv_xor_v2_probe().

Fixes: 19a340b1a820430 ("dmaengine: mv_xor_v2: new driver")
Reported-by: Hulk Robot <hul...@huawei.com>
Signed-off-by: Zhihao Cheng <chengzhih...@huawei.com>
Link: https://lore.kernel.org/r/20201124010813.1939095-1-chengzhih...@huawei.com
Signed-off-by: Vinod Koul <vk...@kernel.org>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 drivers/dma/mv_xor_v2.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/dma/mv_xor_v2.c b/drivers/dma/mv_xor_v2.c
index 8dc0aa4d73ab8..462adf7e4e952 100644
--- a/drivers/dma/mv_xor_v2.c
+++ b/drivers/dma/mv_xor_v2.c
@@ -777,8 +777,10 @@ static int mv_xor_v2_probe(struct platform_device *pdev)
                goto disable_clk;
 
        msi_desc = first_msi_entry(&pdev->dev);
-       if (!msi_desc)
+       if (!msi_desc) {
+               ret = -ENODEV;
                goto free_msi_irqs;
+       }
        xor_dev->msi_desc = msi_desc;
 
        ret = devm_request_irq(&pdev->dev, msi_desc->irq,
-- 
2.27.0