scsi: pm80xx: Use bitmap_zalloc() for tags bitmap allocation

We used to allocate X bytes while we only need X bits.

Link: https://lore.kernel.org/r/20211101232825.2350233-5-ipylypiv@google.comReviewed-by: Vishakha Channapattan <vishakhavc@google.com>
Acked-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Igor Pylypiv <ipylypiv@google.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/pm8001/pm8001_init.c

@@ -179,7 +179,7 @@ static void pm8001_free(struct pm8001_hba_info *pm8001_ha)
 	}
 	PM8001_CHIP_DISP->chip_iounmap(pm8001_ha);
 	flush_workqueue(pm8001_wq);
-	kfree(pm8001_ha->tags);
+	bitmap_free(pm8001_ha->tags);
 	kfree(pm8001_ha);
 }
 
@@ -1194,7 +1194,7 @@ pm8001_init_ccb_tag(struct pm8001_hba_info *pm8001_ha, struct Scsi_Host *shost,
 	can_queue = ccb_count - PM8001_RESERVE_SLOT;
 	shost->can_queue = can_queue;
 
-	pm8001_ha->tags = kzalloc(ccb_count, GFP_KERNEL);
+	pm8001_ha->tags = bitmap_zalloc(ccb_count, GFP_KERNEL);
 	if (!pm8001_ha->tags)
 		goto err_out;