Since commit 
b37a46683739 ("netdevice: add the case if dev is NULL"),
dev_put(NULL) is safe, check NULL before dev_put() is not needed.
Signed-off-by: Ziyang Xuan <william.xuanziyang@huawei.com>
Tested-by: Gurucharan <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
 
        if (lag->pf)
                ice_unregister_lag_handler(lag);
 
-       if (lag->upper_netdev)
-               dev_put(lag->upper_netdev);
+       dev_put(lag->upper_netdev);
 
-       if (lag->peer_netdev)
-               dev_put(lag->peer_netdev);
+       dev_put(lag->peer_netdev);
 
        kfree(lag);