IB/iser: Add missing counter increment in iser_data_buf_aligned_len()

While adding sg chaining support to iSER, a "for" loop was replaced
with a "for_each_sg" loop. The "for" loop included the incrementation
of 2 variables. Only one of them is incremented in the current
"for_each_sg" loop. This caused iSER to think that all data is
unaligned, and all data was copied to aligned buffers.

This patch increments the missing counter inside the "for_each_sg"
loop whenever necessary.

Signed-off-by: Erez Zilber <erezz@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

drivers/infiniband/ulp/iser/iser_memory.c

@@ -310,13 +310,15 @@ static unsigned int iser_data_buf_aligned_len(struct iser_data_buf *data,
 		if (i + 1 < data->dma_nents) {
 			next_addr = ib_sg_dma_address(ibdev, sg_next(sg));
 			/* are i, i+1 fragments of the same page? */
-			if (end_addr == next_addr)
+			if (end_addr == next_addr) {
+				cnt++;
 				continue;
-			else if (!IS_4K_ALIGNED(end_addr)) {
+			} else if (!IS_4K_ALIGNED(end_addr)) {
 				ret_len = cnt + 1;
 				break;
 			}
 		}
+		cnt++;
 	}
 	if (i == data->dma_nents)
 		ret_len = cnt;	/* loop ended */