[bug report] thermal/drivers/cpuidle_cooling: Use device name instead of auto-numbering

[Dan Carpenter <dan.carpenter@oracle.com>]

Hello Daniel Lezcano,

The patch 6fd1b186d900: "thermal/drivers/cpuidle_cooling: Use device
name instead of auto-numbering" from Mar 14, 2021, leads to the
following static checker warning:

	drivers/thermal/cpuidle_cooling.c:218 __cpuidle_cooling_register()
	warn: 'name' was already freed.

drivers/thermal/cpuidle_cooling.c
   200  
   201          dev = get_cpu_device(cpumask_first(drv->cpumask));
   202  
   203          name = kasprintf(GFP_KERNEL, "idle-%s", dev_name(dev));
   204          if (!name) {
   205                  ret = -ENOMEM;
   206                  goto out_unregister;
   207          }
   208  
   209          cdev = thermal_of_cooling_device_register(np, name, idle_cdev,
   210                                                    &cpuidle_cooling_ops);
   211          kfree(name);
                ^^^^^^^^^^^^

   212  
   213          if (IS_ERR(cdev)) {
   214                  ret = PTR_ERR(cdev);
   215                  goto out_unregister;
   216          }
   217  
   218          pr_debug("%s: Idle injection set with idle duration=%u, latency=%u\n",
   219                   name, idle_duration_us, latency_us);
                         ^^^^
Used after free

   220  
   221          return 0;
   222  
   223  out_unregister:
   224          idle_inject_unregister(ii_dev);
   225  out_kfree:
   226          kfree(idle_cdev);
   227  out:
   228          return ret;
   229  }

regards,
dan carpenter