[SCSI] ipr: Avoid target_destroy accessing memory after it was freed

Defined target_ids,array_ids and vsets_ids as unsigned long to avoid
target_destroy accessing memory after it was freed.

Signed-off-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

drivers/scsi/ipr.h

@@ -1440,9 +1440,9 @@ struct ipr_ioa_cfg {
 	/*
 	 * Bitmaps for SIS64 generated target values
 	 */
-	unsigned long *target_ids;
-	unsigned long *array_ids;
-	unsigned long *vset_ids;
+	unsigned long target_ids[BITS_TO_LONGS(IPR_MAX_SIS64_DEVS)];
+	unsigned long array_ids[BITS_TO_LONGS(IPR_MAX_SIS64_DEVS)];
+	unsigned long vset_ids[BITS_TO_LONGS(IPR_MAX_SIS64_DEVS)];
 
 	u16 type; /* CCIN of the card */