[SCSI] qla2xxx: Use sg_next to fetch next sg element while walking sg list.

Signed-off-by: Giridhar Malavali <[e-mail]>
Signed-off-by: Madhuranath Iyengar <[e-mail]>
Signed-off-by: James Bottomley <[e-mail]>

drivers/scsi/qla2xxx/qla_nx.c

···
 			*cur_dsd++ = cpu_to_le32(LSD(sle_dma));
 			*cur_dsd++ = cpu_to_le32(MSD(sle_dma));
 			*cur_dsd++ = cpu_to_le32(sg_dma_len(cur_seg));
-			cur_seg++;
+			cur_seg = sg_next(cur_seg);
 			avail_dsds--;
 		}
 	}