hw/nvme: remove assert from nvme_get_zone_by_slba

Make nvme_get_zone_by_slba() return NULL if the slba is out of range.
This allows the function to be used without guarding the call with a
call to nvme_check_bounds(), in preparation for the next patch.

Add asserts after calling nvme_get_zone_by_slba() instead.

Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
1 file changed