[PATCH v2] nvdimm: of_pmem: Check return value and add kfree for kstrdup

[Chen Ni]

Check the return value of kstrdup() and add kfree() for kstrdup() to 
avoid memory leak.

Fixes: 49bddc73d15c ("libnvdimm/of_pmem: Provide a unique name for bus 
provider")
Signed-off-by: Chen Ni <nic...@iscas.ac.cn>
---
Changelog:

v1 -> v2:

1.Add a fixes tag.
2.Update commit message.
---
 drivers/nvdimm/of_pmem.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/nvdimm/of_pmem.c b/drivers/nvdimm/of_pmem.c
index 10dbdcdfb9ce..fe6edb7e6631 100644
--- a/drivers/nvdimm/of_pmem.c
+++ b/drivers/nvdimm/of_pmem.c
@@ -31,11 +31,17 @@ static int of_pmem_region_probe(struct platform_device 
*pdev)
                return -ENOMEM;
 
        priv->bus_desc.provider_name = kstrdup(pdev->name, GFP_KERNEL);
+       if (!priv->bus_desc.provider_name) {
+               kfree(priv);
+               return -ENOMEM;
+       }
+
        priv->bus_desc.module = THIS_MODULE;
        priv->bus_desc.of_node = np;
 
        priv->bus = bus = nvdimm_bus_register(&pdev->dev, &priv->bus_desc);
        if (!bus) {
+               kfree(priv->bus_desc.provider_name);
                kfree(priv);
                return -ENODEV;
        }
-- 
2.25.1