[PATCH] slimbus: Add a check on the return value of platform_device_add

[Aditya Pakki]

In of_qcom_slim_ngd_register, the function platform_device_add() may fail.
The fix returns the error value upstream in case of failure.

Signed-off-by: Aditya Pakki <pakki...@umn.edu>
---
 drivers/slimbus/qcom-ngd-ctrl.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/slimbus/qcom-ngd-ctrl.c b/drivers/slimbus/qcom-ngd-ctrl.c
index 1382a8df6c75..a2dffb2b4c88 100644
--- a/drivers/slimbus/qcom-ngd-ctrl.c
+++ b/drivers/slimbus/qcom-ngd-ctrl.c
@@ -1329,6 +1329,7 @@ static int of_qcom_slim_ngd_register(struct device 
*parent,
        struct qcom_slim_ngd *ngd;
        struct device_node *node;
        u32 id;
+       int ret;
 
        data = of_match_node(qcom_slim_ngd_dt_match, parent->of_node)->data;
 
@@ -1348,7 +1349,10 @@ static int of_qcom_slim_ngd_register(struct device 
*parent,
                ctrl->ngd = ngd;
                platform_set_drvdata(ngd->pdev, ctrl);
 
-               platform_device_add(ngd->pdev);
+               ret = platform_device_add(ngd->pdev);
+               if (ret)
+                       return ret;
+
                ngd->base = ctrl->base + ngd->id * data->offset +
                                        (ngd->id - 1) * data->size;
                ctrl->ngd = ngd;
-- 
2.17.1