[PATCH] dmaengine: xilinx: xdma: Fix IS_ERR() vs NULL bug in xdma_probe()

[Harshit Mogalapalli]

devm_regmap_init_mmio() returns error pointers on error, it doesn't
return NULL. Update the error check.

Fixes: 17ce252266c7 ("dmaengine: xilinx: xdma: Add xilinx xdma driver")
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli at oracle.com>
---
This is based on static analysis with smatch, only compile tested.
---
 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 718842fdaf98..44fae351f0a0 100644
--- a/drivers/dma/xilinx/xdma.c
+++ b/drivers/dma/xilinx/xdma.c
@@ -1240,7 +1240,8 @@ static int xdma_probe(struct platform_device *pdev)
 
 	xdev->rmap = devm_regmap_init_mmio(&pdev->dev, reg_base,
 					   &xdma_regmap_config);
-	if (!xdev->rmap) {
+	if (IS_ERR(xdev->rmap)) {
+		ret = PTR_ERR(xdev->rmap);
 		xdma_err(xdev, "config regmap failed: %d", ret);
 		goto failed;
 	}
-- 
2.39.3