_dma_addr_sg_split(): set errno when not found (#402)

Signed-off-by: John Levon <john.levon@nutanix.com>
Reviewed-by: Thanos Makatos <thanos.makatos@nutanix.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/lib/dma.c b/lib/dma.c
index f5b5540..60e1ae4 100644
--- a/lib/dma.c
+++ b/lib/dma.c
@@ -410,7 +410,8 @@ out:
     if (!found) {
         // There is still a region which was not found.
         assert(len > 0);
-        cnt = -1;
+        errno = ENOENT;
+        return -1;
     } else if (cnt > max_sg) {
         cnt = -cnt - 1;
     }