scsi: pm8001: Introduce pm8001_free_irq()

Instead of repeating the same code twice in pm8001_pci_remove() and
pm8001_pci_suspend() to free IRQs, introduuce the function
pm8001_free_irq() to do that.

Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Link: https://lore.kernel.org/r/20230911232745.325149-3-dlemoal@kernel.org


Acked-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>