NFSv4: Fix a typo in nfs_inode_reclaim_delegation

We were intending to put the previous instance of delegation->cred
before setting a new one.

Thanks to David Howells for spotting this.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

fs/nfs/delegation.c

@@ -109,6 +109,7 @@ static void nfs_delegation_claim_opens(struct inode *inode, const nfs4_stateid *
 void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res)
 {
 	struct nfs_delegation *delegation = NFS_I(inode)->delegation;
+	struct rpc_cred *oldcred;
 
 	if (delegation == NULL)
 		return;
@@ -116,11 +117,12 @@ void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred, st
 			sizeof(delegation->stateid.data));
 	delegation->type = res->delegation_type;
 	delegation->maxsize = res->maxsize;
-	put_rpccred(cred);
+	oldcred = delegation->cred;
 	delegation->cred = get_rpccred(cred);
 	delegation->flags &= ~NFS_DELEGATION_NEED_RECLAIM;
 	NFS_I(inode)->delegation_state = delegation->type;
 	smp_wmb();
+	put_rpccred(oldcred);
 }
 
 /*