V4L/DVB: Add notification to cxusb_dualdig4_rev2_frontend_attach() error handling

Add a notification to the dib7000p_i2c_enumeration() failure path in
cxusb_dualdig4_rev2_frontend_attach().
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

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

@@ -1026,8 +1026,10 @@ static int cxusb_dualdig4_rev2_frontend_attach(struct dvb_usb_adapter *adap)
 	cxusb_bluebird_gpio_pulse(adap->dev, 0x02, 1);
 
 	if (dib7000p_i2c_enumeration(&adap->dev->i2c_adap, 1, 18,
-				 &cxusb_dualdig4_rev2_config) < 0)
+				     &cxusb_dualdig4_rev2_config) < 0) {
+		printk(KERN_WARNING "Unable to enumerate dib7000p\n");
 		return -ENODEV;
+	}
 
 	adap->fe = dvb_attach(dib7000p_attach, &adap->dev->i2c_adap, 0x80,
 			      &cxusb_dualdig4_rev2_config);