media: mgb4: Fix double debugfs remove

Fixes an error where debugfs_remove_recursive() is called first on a parent
directory and then again on a child which causes a kernel panic.

Signed-off-by: Martin Tůma <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>
Fixes: 0ab13674a9bd ("media: pci: mgb4: Added Digiteq Automotive MGB4 driver")
Cc: <[e-mail]>
[hverkuil: added Fixes/Cc tags]

drivers/media/pci/mgb4/mgb4_core.c

···
 	struct mgb4_dev *mgbdev = pci_get_drvdata(pdev);
 	int i;
 
-#ifdef CONFIG_DEBUG_FS
-	debugfs_remove_recursive(mgbdev->debugfs);
-#endif
 #if IS_REACHABLE(CONFIG_HWMON)
 	hwmon_device_unregister(mgbdev->hwmon_dev);
 #endif
···
 	for (i = 0; i < MGB4_VIN_DEVICES; i++)
 		if (mgbdev->vin[i])
 			mgb4_vin_free(mgbdev->vin[i]);
+
+#ifdef CONFIG_DEBUG_FS
+	debugfs_remove_recursive(mgbdev->debugfs);
+#endif
 
 	device_remove_groups(&mgbdev->pdev->dev, mgb4_pci_groups);
 	free_spi(mgbdev);