base: dd: don't remove driver_data in -EPROBE_DEFER case

the driver_data may be used for sanity check, it fails the
probe() if driver_data is NULL after it is re-triggered.
for example, soc_probe() in sound/soc/soc-core.c
Signed-off-by: Yi Zhang <yizhang_hust@163.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/base/dd.c

@@ -402,6 +402,7 @@ static int really_probe(struct device *dev, struct device_driver *drv)
 	devres_release_all(dev);
 	driver_sysfs_remove(dev);
 	dev->driver = NULL;
+	if (ret != -EPROBE_DEFER)
 		dev_set_drvdata(dev, NULL);
 	if (dev->pm_domain && dev->pm_domain->dismiss)
 		dev->pm_domain->dismiss(dev);