mfd: twl-core: Convert to i2c_new_dummy_device

Move from i2c_new_dummy() to i2c_new_dummy_device(), so we now get an
ERRPTR which we use in error handling.

Signed-off-by: Wolfram Sang <[e-mail]>
Signed-off-by: Lee Jones <[e-mail]>

drivers/mfd/twl-core.c

···
 		if (i == 0) {
 			twl->client = client;
 		} else {
-			twl->client = i2c_new_dummy(client->adapter,
+			twl->client = i2c_new_dummy_device(client->adapter,
 						    client->addr + i);
-			if (!twl->client) {
+			if (IS_ERR(twl->client)) {
 				dev_err(&client->dev,
 					"can't attach client %d\n", i);
-				status = -ENOMEM;
+				status = PTR_ERR(twl->client);
 				goto fail;
 			}
 		}