NFSv3: Delete duplicate judgement in nfs3_async_handle_jukebox

As eb96d5c ("SUNRPC handle EKEYEXPIRED in call_refreshresult")
commit handle EKEYEXPIRED in call_refreshresult, so there is only handle
when "task->tk_status" is equal "-EJUKEBOX" in nfs3_async_handle_jukebox.

Signed-off-by: Ye Bin <yebin10@huawei.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

fs/nfs/nfs3proc.c

@@ -49,8 +49,7 @@ nfs3_async_handle_jukebox(struct rpc_task *task, struct inode *inode)
 {
 	if (task->tk_status != -EJUKEBOX)
 		return 0;
-	if (task->tk_status == -EJUKEBOX)
-		nfs_inc_stats(inode, NFSIOS_DELAY);
+	nfs_inc_stats(inode, NFSIOS_DELAY);
 	task->tk_status = 0;
 	rpc_restart_call(task);
 	rpc_delay(task, NFS_JUKEBOX_RETRY_TIME);