[PATCH -next] dmaengine: xilinx: xdma: fix return value check in xdma_probe()

[Yang Yingliang <yangyingliang@xxxxxxxxxx>]

devm_ioremap_resource() never returns NULL pointer, it will return
ERR_PTR() when it fails, so replace the check with IS_ERR().

Fixes: 17ce252266c7 ("dmaengine: xilinx: xdma: Add xilinx xdma driver")
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
---
 drivers/dma/xilinx/xdma.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/dma/xilinx/xdma.c b/drivers/dma/xilinx/xdma.c
index 462109c61653..1c836cbdafa1 100644
--- a/drivers/dma/xilinx/xdma.c
+++ b/drivers/dma/xilinx/xdma.c
@@ -892,8 +892,9 @@ static int xdma_probe(struct platform_device *pdev)
 	}
 
 	reg_base = devm_ioremap_resource(&pdev->dev, res);
-	if (!reg_base) {
+	if (IS_ERR(reg_base)) {
 		xdma_err(xdev, "ioremap failed");
+		ret = PTR_ERR(reg_base);
 		goto failed;
 	}
 
-- 
2.25.1