kvm tools: use correct error value for virtio-9p RLERROR

RLERROR expects positive error values, passing negative values causes guest kernel
panic.

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

diff --git a/tools/kvm/virtio/9p.c b/tools/kvm/virtio/9p.c
index 6c115ff0f0a1b282190f122298dfbc0e6043ee89..99279f19ead1fddd2e0502139d43649298881e49 100644 (file)
--- a/tools/kvm/virtio/9p.c
+++ b/tools/kvm/virtio/9p.c
@@ -548,7 +548,7 @@ static void virtio_p9_readdir(struct p9_dev *p9dev,
        fid = get_fid(p9dev, fid_val);
 
        if (!fid->is_dir) {
-               errno = -EINVAL;
+               errno = EINVAL;
                goto err_out;
        }