[PATCH] slimbus: fix a NULL pointer dereference in of_qcom_slim_ngd_register

[Kangjie Lu]

In case platform_device_alloc fails, the fix returns an error
code to avoid the NULL pointer dereference.

Signed-off-by: Kangjie Lu <k...@umn.edu>
---
 drivers/slimbus/qcom-ngd-ctrl.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/slimbus/qcom-ngd-ctrl.c b/drivers/slimbus/qcom-ngd-ctrl.c
index 71f094c9ec68..f3585777324c 100644
--- a/drivers/slimbus/qcom-ngd-ctrl.c
+++ b/drivers/slimbus/qcom-ngd-ctrl.c
@@ -1342,6 +1342,10 @@ static int of_qcom_slim_ngd_register(struct device 
*parent,
                        return -ENOMEM;
 
                ngd->pdev = platform_device_alloc(QCOM_SLIM_NGD_DRV_NAME, id);
+               if (!ngd->pdev) {
+                       kfree(ngd);
+                       return -ENOMEM;
+               }
                ngd->id = id;
                ngd->pdev->dev.parent = parent;
                ngd->pdev->driver_override = QCOM_SLIM_NGD_DRV_NAME;
-- 
2.17.1