[media] em28xx-dvb: fix PCTV 461e tuner I2C binding

Add missing m88ts2022 module reference counts as removing that module
is not allowed when it is used by em28xx-dvb module. That same module
was not unregistered correctly, fix it too.

Error cases validated by returning errors from m88ds3103, m88ts2022
and a8293 probe().

Signed-off-by: Antti Palosaari <crope@iki.fi>
Cc: stable@vger.kernel.org
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

drivers/media/usb/em28xx/em28xx-dvb.c

@@ -1630,6 +1630,7 @@ static int em28xx_dvb_resume(struct em28xx *dev)
 	em28xx_info("Resuming DVB extension");
 	if (dev->dvb) {
 		struct em28xx_dvb *dvb = dev->dvb;
+		struct i2c_client *client = dvb->i2c_client_tuner;
 
 		if (dvb->fe[0]) {
 			ret = dvb_frontend_resume(dvb->fe[0]);
@@ -1640,6 +1641,15 @@ static int em28xx_dvb_resume(struct em28xx *dev)
 			ret = dvb_frontend_resume(dvb->fe[1]);
 			em28xx_info("fe1 resume %d", ret);
 		}
+		/* remove I2C tuner */
+		if (client) {
+			module_put(client->dev.driver->owner);
+			i2c_unregister_device(client);
+		}
+
+		em28xx_unregister_dvb(dvb);
+		kfree(dvb);
+		dev->dvb = NULL;
 	}
 
 	return 0;