ice: Remove unnecessary NULL check before dev_put

Since commit b37a4668 ("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>

drivers/net/ethernet/intel/ice/ice_lag.c

@@ -447,11 +447,9 @@ void ice_deinit_lag(struct ice_pf *pf)
 	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);