rxrpc: Fix set but unused variable 'usage' in rxrpc_get_peer().

I backed off from trying to just eliminate this variable, since
transforming atomic_inc_return() into atomic_inc() takes away
the memory barriers.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/net/rxrpc/ar-peer.c b/net/rxrpc/ar-peer.c
index b6ff06351d67..2754f098d436 100644
--- a/net/rxrpc/ar-peer.c
+++ b/net/rxrpc/ar-peer.c
@@ -157,6 +157,7 @@ struct rxrpc_peer *rxrpc_get_peer(struct sockaddr_rxrpc *srx, gfp_t gfp)
         /* we can now add the new candidate to the list */
         peer = candidate;
         candidate = NULL;
+        usage = atomic_read(&peer->usage);
 
         list_add_tail(&peer->link, &rxrpc_peers);
         write_unlock_bh(&rxrpc_peer_lock);
@@ -171,7 +172,7 @@ success:
              &peer->srx.transport.sin.sin_addr,
              ntohs(peer->srx.transport.sin.sin_port));
 
-        _leave(" = %p {u=%d}", peer, atomic_read(&peer->usage));
+        _leave(" = %p {u=%d}", peer, usage);
         return peer;
 
         /* we found the peer in the list immediately */