neighbour: Remove redundant assignment to err

'err' has been checked against 0 in the if statement.

Signed-off-by: Yue Haibing <[e-mail]>
Reviewed-by: Simon Horman <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Jakub Kicinski <[e-mail]>

net/core/neighbour.c

···
 
 	err = __neigh_update(neigh, lladdr, ndm->ndm_state, flags,
 			     NETLINK_CB(skb).portid, extack);
-	if (!err && ndm_flags & (NTF_USE | NTF_MANAGED)) {
+	if (!err && ndm_flags & (NTF_USE | NTF_MANAGED))
 		neigh_event_send(neigh, NULL);
-		err = 0;
-	}
 	neigh_release(neigh);
 out:
 	return err;