xfrm: remove a duplicated assignment

Fixes: 30846090 ("xfrm: policy: add sequence count to sync with hash resize")
Cc: Florian Westphal <fw@strlen.de>
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>

net/xfrm/xfrm_policy.c

@@ -581,9 +581,6 @@ static void xfrm_bydst_resize(struct net *net, int dir)
 	spin_lock_bh(&net->xfrm.xfrm_policy_lock);
 	write_seqcount_begin(&xfrm_policy_hash_generation);
 
-	odst = rcu_dereference_protected(net->xfrm.policy_bydst[dir].table,
-				lockdep_is_held(&net->xfrm.xfrm_policy_lock));
-
 	odst = rcu_dereference_protected(net->xfrm.policy_bydst[dir].table,
 				lockdep_is_held(&net->xfrm.xfrm_policy_lock));