scsi: smartpqi: Fix a typo in func pqi_aio_submit_io()

scsi: smartpqi: Fix a typo in func pqi_aio_submit_io()

Use correct pqi_aio_path_request structure to calculate the offset to
sg_descriptors.

The function pqi_aio_submit_io() uses the pqi_raid_path_request structure
to calculate the offset of the structure member sg_descriptors.  This is
incorrect.  It should be using the pqi_aio_path_request structure instead.

This typo is benign because the offsets are the same in both structures.

Link: https://lore.kernel.org/r/164375210321.440833.2566086558909686629.stgit@brunhilda.pdev.net
Reviewed-by: Mike McGowen <mike.mcgowen@microchip.com>
Reviewed-by: Scott Teel <scott.teel@microchip.com>
Signed-off-by: Kevin Barnett <kevin.barnett@microchip.com>
Signed-off-by: Don Brace <don.brace@microchip.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>