[PATCH -next] dm flakey: fix error return code in flakey_ctr()

[Wei Yongjun <weiyj.lk@gmail.com>]

Fix to return error code -EINVAL instead of 0(r is overwrote to
0 by dm_read_arg() call), as done elsewhere in this function.

Fixes: e80d1c805a3b ("dm: do not override error code returned
from dm_get_device()")
Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com>
---
 drivers/md/dm-flakey.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/md/dm-flakey.c b/drivers/md/dm-flakey.c
index 19db13e..f0cb0fe 100644
--- a/drivers/md/dm-flakey.c
+++ b/drivers/md/dm-flakey.c
@@ -200,11 +200,13 @@ static int flakey_ctr(struct dm_target *ti, unsigned int argc, char **argv)
 
 	if (!(fc->up_interval + fc->down_interval)) {
 		ti->error = "Total (up + down) interval is zero";
+		r = -EINVAL;
 		goto bad;
 	}
 
 	if (fc->up_interval + fc->down_interval < fc->up_interval) {
 		ti->error = "Interval overflow";
+		r = -EINVAL;
 		goto bad;
 	}