[PATCH 2/2] libmultipath/foreign/nvme: fix return value check in get_ctrl_blkdev()

[Martin Wilck <martin.wilck@xxxxxxxx>]

Only a negative return value from udev_enumerate_add_match_subsystem()
indicates an error.

Fixes: 7b47762 ("libmultipath: nvme: fix path detection for kernel 4.16")

Signed-off-by: Martin Wilck <mwilck@xxxxxxxx>
---
 libmultipath/foreign/nvme.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libmultipath/foreign/nvme.c b/libmultipath/foreign/nvme.c
index 0d19303..4cbdf60 100644
--- a/libmultipath/foreign/nvme.c
+++ b/libmultipath/foreign/nvme.c
@@ -536,7 +536,7 @@ struct udev_device *get_ctrl_blkdev(const struct context *ctx,
 	pthread_cleanup_push(_udev_enumerate_unref, enm);
 	if (udev_enumerate_add_match_parent(enm, ctrl) < 0)
 		goto out;
-	if (udev_enumerate_add_match_subsystem(enm, "block"))
+	if (udev_enumerate_add_match_subsystem(enm, "block") < 0)
 		goto out;
 
 	if (udev_enumerate_scan_devices(enm) < 0) {
-- 
2.51.0