[PATCH 2/3] nvme-core: don't check non-mdts for disc ctrl

[Christoph Hellwig]

On Mon, Apr 11, 2022 at 12:09:31PM +0000, Chaitanya Kulkarni wrote:
> -	ret = nvme_init_non_mdts_limits(ctrl);
> -	if (ret < 0)
> -		return ret;
> +	if (ctrl->cntrltype == NVME_CTRL_IO) {
> +		ret = nvme_init_non_mdts_limits(ctrl);
> +		if (ret < 0)
> +			return ret;
> +	}

This looks better, but I don't think it will actually work as-is.
The CNTRLTYPE field is never than discovry controllers.  We
special case them in nvme_init_subsystem, which should move to
nvme_init_identify instead so that ctrl->cntrltype is always valid
after that.