[PATCH nvme-cli] fabrics: keep the backward compatibility

[Chaitanya Kulkarni]

Don't print the message while disconnecting it is breaking blktests,
see below without this patch :-

nvme/005 (reset local loopback target)                       [failed]
    runtime  6.799s  ...  6.814s
    --- tests/nvme/005.out	2021-08-29 01:09:20.287901783 -0700
    +++ /mnt/data/blktests/results/nodev/nvme/005.out.bad	2022-03-17 18:11:16.198191553 -0700
    @@ -1,2 +1,3 @@
     Running nvme/005
    +Disconnected nvme1
     Test complete

With this patch :-

blktests (master) # ./check nvme/005
nvme/005 (reset local loopback target)                       [passed]
    runtime  6.807s  ...  6.801s

Signed-off-by: Chaitanya Kulkarni <kch at nvidia.com>
---
 fabrics.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/fabrics.c b/fabrics.c
index e08ffd6..f51c8b7 100644
--- a/fabrics.c
+++ b/fabrics.c
@@ -791,9 +791,7 @@ int nvmf_disconnect(const char *desc, int argc, char **argv)
 				return errno;
 			}
 			ret = nvme_disconnect_ctrl(c);
-			if (!ret)
-				printf("Disconnected %s\n", p);
-			else
+			if (ret)
 				fprintf(stderr,
 					"Failed to disconnect %s: %s\n",
 					p, nvme_strerror(errno));
-- 
2.29.0