V4L/DVB (9008): S2API: Bugfix related to syncing the cache when used with the old API.

Many thanks to Darron Broad for pointing out the obvious.
Signed-off-by: Steven Toth <stoth@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/dvb-core/dvb_frontend.c

@@ -1595,9 +1595,9 @@ static int dvb_frontend_ioctl_legacy(struct inode *inode, struct file *file,
 				break;
 			}
 
-			dtv_property_cache_sync(fe, &fepriv->parameters);
 			memcpy (&fepriv->parameters, parg,
 				sizeof (struct dvb_frontend_parameters));
+			dtv_property_cache_sync(fe, &fepriv->parameters);
 		}
 
 		memset(&fetunesettings, 0, sizeof(struct dvb_frontend_tune_settings));