diff --git a/net/core/filter.c b/net/core/filter.c
index 9a37860a80fc78378705b681ec3b0468824cbcf4..a253a6197e6b37a7ae2fe451c646b01c861a3e22 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -98,8 +98,8 @@ int sk_filter_trim_cap(struct sock *sk, struct sk_buff *skb, unsigned int cap)
 
 		skb->sk = sk;
 		pkt_len = bpf_prog_run_save_cb(filter->prog, skb);
-		err = pkt_len ? pskb_trim(skb, max(cap, pkt_len)) : -EPERM;
 		skb->sk = save_sk;
+		err = pkt_len ? pskb_trim(skb, max(cap, pkt_len)) : -EPERM;
 	}
 	rcu_read_unlock();