HID: fixed bug in single-touch emulation on the stantum panel

Fixed stupid copy-paste bug in touchscreen emulation for the Stantum multitouch
panel: a flag was reset just before being tested.
Signed-off-by: NStephane Chatty <chatty@enac.fr>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

drivers/hid/hid-stantum.c

@@ -147,7 +147,6 @@ static void stantum_filter_event(struct stantum_data *sd,
 
 	input_mt_sync(input);
 	sd->valid = false;
-	sd->first = false;
 
 	/* touchscreen emulation */
 	if (sd->first) {
@@ -158,6 +157,7 @@ static void stantum_filter_event(struct stantum_data *sd,
 		input_event(input, EV_ABS, ABS_X, sd->x);
 		input_event(input, EV_ABS, ABS_Y, sd->y);
 	}
+	sd->first = false;
 }