The devm_ioremap_resource() function returns error pointers on error.
It never returns NULL.  Update the error checking to match.

Fixes: 26e20622a8ae ("coresight: add coresight Trace Network On Chip driver")
Signed-off-by: Dan Carpenter <redacted>
---
 drivers/hwtracing/coresight/coresight-tnoc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/hwtracing/coresight/coresight-tnoc.c b/drivers/hwtracing/coresight/coresight-tnoc.c
index 0e4164707eea..d542df46ea39 100644
--- a/drivers/hwtracing/coresight/coresight-tnoc.c
+++ b/drivers/hwtracing/coresight/coresight-tnoc.c

@@ -183,8 +183,8 @@ static int trace_noc_probe(struct amba_device *adev, const struct amba_id *id)
 	dev_set_drvdata(dev, drvdata);
 
 	drvdata->base = devm_ioremap_resource(dev, &adev->res);
-	if (!drvdata->base)
-		return -ENOMEM;
+	if (IS_ERR(drvdata->base))
+		return PTR_ERR(drvdata->base);
 
 	spin_lock_init(&drvdata->spinlock);