[SCSI] tgt: fix a rdma indirect transfer error bug

This sets sg_dma_len to a proper value.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

drivers/scsi/libsrp.c

diff --git a/drivers/scsi/libsrp.c b/drivers/scsi/libsrp.c
index 5631c19..732446e 100644
--- a/drivers/scsi/libsrp.c
+++ b/drivers/scsi/libsrp.c
@@ -254,6 +254,7 @@
 
 		sg_init_one(&dummy, md, id->table_desc.len);
 		sg_dma_address(&dummy) = token;
+		sg_dma_len(&dummy) = id->table_desc.len;
 		err = rdma_io(sc, &dummy, 1, &id->table_desc, 1, DMA_TO_DEVICE,
 			      id->table_desc.len);
 		if (err) {