[PATCH -next] connector: simplify the return expression of cn_add_callback()

[Qinglang Miao]

Simplify the return expression.

Signed-off-by: Qinglang Miao <miaoqingl...@huawei.com>
---
 drivers/connector/connector.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/connector/connector.c b/drivers/connector/connector.c
index 2d22d6bf5..7d59d18c6 100644
--- a/drivers/connector/connector.c
+++ b/drivers/connector/connector.c
@@ -197,17 +197,12 @@ int cn_add_callback(struct cb_id *id, const char *name,
                    void (*callback)(struct cn_msg *,
                                     struct netlink_skb_parms *))
 {
-       int err;
        struct cn_dev *dev = &cdev;
 
        if (!cn_already_initialized)
                return -EAGAIN;
 
-       err = cn_queue_add_callback(dev->cbdev, name, id, callback);
-       if (err)
-               return err;
-
-       return 0;
+       return cn_queue_add_callback(dev->cbdev, name, id, callback);
 }
 EXPORT_SYMBOL_GPL(cn_add_callback);
 
-- 
2.23.0