ata: libata-sata: Remove superfluous assignment in ata_sas_port_alloc()

ata_sas_port_alloc() calls ata_port_alloc() which already assigns ap->lock
so there is no need for ata_sas_port_alloc() to assign it again.

Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20240703184418.723066-15-cassel@kernel.org


Signed-off-by: Niklas Cassel <cassel@kernel.org>