Hi,
I have sent a V2 patch. 

Thanks for your review.
------------------------------------------------------------------
发件人：Logan Gunthorpe <logang@deltatee.com>
发送时间：2021年6月5日(星期六) 00:21
收件人：Yang Li <yang.lee@linux.alibaba.com>; jdmason <jdmason@kudzu.us>
抄　送：dave.jiang <dave.jiang@intel.com>; allenbh <allenbh@gmail.com>; linux-ntb <linux-ntb@googlegroups.com>; linux-kernel <linux-kernel@vger.kernel.org>
主　题：Re: [PATCH 2/2] NTB: Fix an error code in ntb_msit_probe()




On 2021-06-04 4:20 a.m., Yang Li wrote:
> When the value of nm->isr_ctx is false, the value of ret is 0.
> So, we set ret to -ENOMEM to indicate this error.
> 
> Clean up smatch warning:
> drivers/ntb/test/ntb_msi_test.c:373 ntb_msit_probe() warn: missing error
> code 'ret'.
> 
> Reported-by: Abaci Robot <abaci@linux.alibaba.com>
> Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
> ---
>  drivers/ntb/test/ntb_msi_test.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/ntb/test/ntb_msi_test.c b/drivers/ntb/test/ntb_msi_test.c
> index 7095ecd..5f9e0be 100644
> --- a/drivers/ntb/test/ntb_msi_test.c
> +++ b/drivers/ntb/test/ntb_msi_test.c
> @@ -369,8 +369,10 @@ static int ntb_msit_probe(struct ntb_client *client, struct ntb_dev *ntb)
>   if (ret)
>    goto remove_dbgfs;
>  
> - if (!nm->isr_ctx)
> + if (!nm->isr_ctx) {
> +  return -ENOMEM;
>    goto remove_dbgfs;

I think you made a typo here. You probably meant ret = -ENOMEM.

Thanks,

Logan