drm/msm: fix potential NULL pointer dereference

The dereference to 'pdata' should be moved below the NULL test.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c
index 7ddcfbebb1f2..3bab937965d1 100644
--- a/drivers/gpu/drm/msm/msm_gpu.c
+++ b/drivers/gpu/drm/msm/msm_gpu.c
@@ -29,13 +29,14 @@
 static void bs_init(struct msm_gpu *gpu, struct platform_device *pdev)
 {
         struct drm_device *dev = gpu->dev;
-        struct kgsl_device_platform_data *pdata = pdev->dev.platform_data;
+        struct kgsl_device_platform_data *pdata;
 
         if (!pdev) {
                 dev_err(dev->dev, "could not find dtv pdata\n");
                 return;
         }
 
+        pdata = pdev->dev.platform_data;
         if (pdata->bus_scale_table) {
                 gpu->bsc = msm_bus_scale_register_client(pdata->bus_scale_table);
                 DBG("bus scale client: %08x", gpu->bsc);