mtip32xx: also set max_segment_size in the device

If we only set the max_segment_size on the queue an IOMMU merge might
create bigger segments again, so limit the IOMMU merges as well.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

drivers/block/mtip32xx/mtip32xx.c

@@ -3676,6 +3676,7 @@ static int mtip_block_initialize(struct driver_data *dd)
 	blk_queue_physical_block_size(dd->queue, 4096);
 	blk_queue_max_hw_sectors(dd->queue, 0xffff);
 	blk_queue_max_segment_size(dd->queue, 0x400000);
+	dma_set_max_seg_size(&dd->pdev->dev, 0x400000);
 	blk_queue_io_min(dd->queue, 4096);
 
 	/* Set the capacity of the device in 512 byte sectors. */