msm: camera: Correct the NULL check

Add NULL check for input argument.

Change-Id: I05daabd41d2650d5c09fea47b950c935064dac69
Signed-off-by: Viswanadha Raju Thotakura <viswanad@codeaurora.org>
diff --git a/drivers/media/platform/msm/camera/cam_sensor_module/cam_sensor_utils/cam_sensor_util.c b/drivers/media/platform/msm/camera/cam_sensor_module/cam_sensor_utils/cam_sensor_util.c
index ea6f902..3334079 100644
--- a/drivers/media/platform/msm/camera/cam_sensor_module/cam_sensor_utils/cam_sensor_util.c
+++ b/drivers/media/platform/msm/camera/cam_sensor_module/cam_sensor_utils/cam_sensor_util.c
@@ -82,7 +82,7 @@
 		(struct cam_cmd_unconditional_wait *) *cmd_buf;
 	struct i2c_settings_list *i2c_list = NULL;
 
-	if (i2c_list == NULL) {
+	if (list_ptr == NULL) {
 		CAM_ERR(CAM_SENSOR, "Invalid list ptr");
 		return -EINVAL;
 	}