In iomap_readahead_iter, deal with potential iomap_readpage_iter errors.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
---
 fs/iomap/buffered-io.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
index 1753c26c8e76..9f1e329e8b2c 100644
--- a/fs/iomap/buffered-io.c
+++ b/fs/iomap/buffered-io.c

@@ -370,6 +370,8 @@ static loff_t iomap_readahead_iter(const struct iomap_iter *iter,
 			ctx->cur_page_in_bio = false;
 		}
 		ret = iomap_readpage_iter(iter, ctx, done);
+		if (ret < 0)
+			return ret;