[PATCH 2/2] ndtest: fix return value check in ndtest_dimm_register()

[Yang Yingliang]

If device_create_with_groups() fails, it returns ERR_PTR()
and never return NULL, so replace NULL pointer check with
IS_ERR() to fix this problem.

Fixes: 9399ab61ad82 ("ndtest: Add dimms to the two buses")
Signed-off-by: Yang Yingliang <yangyingli...@huawei.com>
---
 tools/testing/nvdimm/test/ndtest.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/testing/nvdimm/test/ndtest.c 
b/tools/testing/nvdimm/test/ndtest.c
index 01ceb98c15a0..42954a6d0929 100644
--- a/tools/testing/nvdimm/test/ndtest.c
+++ b/tools/testing/nvdimm/test/ndtest.c
@@ -740,11 +740,11 @@ static int ndtest_dimm_register(struct ndtest_priv *priv,
        dimm->dev = device_create_with_groups(ndtest_dimm_class,
                                             &priv->pdev.dev,
                                             0, dimm, dimm_attribute_groups,
                                             "test_dimm%d", id);
-       if (!dimm->dev) {
+       if (IS_ERR(dimm->dev)) {
                pr_err("Could not create dimm device attributes\n");
-               return -ENOMEM;
+               return PTR_ERR(dimm->dev);
        }
 
        return 0;
 }
-- 
2.25.1