SUNRPC: Handle the cases where rpc_alloc_iostats() fails

Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>

net/sunrpc/clnt.c

@@ -141,6 +141,9 @@ static struct rpc_clnt * rpc_new_client(struct rpc_xprt *xprt, char *servname, s
 	clnt->cl_vers     = version->number;
 	clnt->cl_stats    = program->stats;
 	clnt->cl_metrics  = rpc_alloc_iostats(clnt);
+	err = -ENOMEM;
+	if (clnt->cl_metrics == NULL)
+		goto out_no_stats;
 
 	if (!xprt_bound(clnt->cl_xprt))
 		clnt->cl_autobind = 1;
@@ -173,6 +176,8 @@ static struct rpc_clnt * rpc_new_client(struct rpc_xprt *xprt, char *servname, s
 		rpc_put_mount();
 	}
 out_no_path:
+	rpc_free_iostats(clnt->cl_metrics);
+out_no_stats:
 	if (clnt->cl_server != clnt->cl_inline_name)
 		kfree(clnt->cl_server);
 	kfree(clnt);
@@ -258,6 +263,9 @@ rpc_clone_client(struct rpc_clnt *clnt)
 		goto out_no_clnt;
 	atomic_set(&new->cl_count, 1);
 	atomic_set(&new->cl_users, 0);
+	new->cl_metrics = rpc_alloc_iostats(clnt);
+	if (new->cl_metrics == NULL)
+		goto out_no_stats;
 	new->cl_parent = clnt;
 	atomic_inc(&clnt->cl_count);
 	new->cl_xprt = xprt_get(clnt->cl_xprt);
@@ -270,8 +278,9 @@ rpc_clone_client(struct rpc_clnt *clnt)
 	rpc_init_rtt(&new->cl_rtt_default, clnt->cl_xprt->timeout.to_initval);
 	if (new->cl_auth)
 		atomic_inc(&new->cl_auth->au_count);
-	new->cl_metrics = rpc_alloc_iostats(clnt);
 	return new;
+out_no_stats:
+	kfree(new);
 out_no_clnt:
 	printk(KERN_INFO "RPC: out of memory in %s\n", __FUNCTION__);
 	return ERR_PTR(-ENOMEM);