Free rphy when pqi_sas_port_add_rphy() returns an error.

If pqi_sas_port_add_rphy() returns an error, the 'rphy' allocated in
sas_end_device_alloc() needs to be freed.

It should be noted that no issues were ever reported.
Reviewed-by: Scott Benesh <scott.benesh@microchip.com>
Reviewed-by: Scott Teel <scott.teel@microchip.com>
Reviewed-by: Mike McGowen <mike.mcgowen@microchip.com>
Reviewed-by: Kevin Barnett <kevin.barnett@microchip.com>
Suggested-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Don Brace <don.brace@microchip.com>
Link: https://lore.kernel.org/r/20230428153712.297638-5-don.brace@microchip.comSigned-off-by: Martin K. Petersen <martin.petersen@oracle.com>