[SRU][N:linux-azure][PATCH 1/1] RDMA/mana_ib: Fix missing ret value

[Vinicius Peixoto]

From: Konstantin Taranov <kotaranov at microsoft.com>

BugLink: https://bugs.launchpad.net/bugs/2105678

Set ret to -ENODEV when netdev_master_upper_dev_get_rcu returns NULL.

Fixes: 8b184e4f1c32 ("RDMA/mana_ib: Enable RoCE on port 1")
Link: https://lore.kernel.org/r/1713881751-21621-1-git-send-email-kotaranov@linux.microsoft.com
Signed-off-by: Konstantin Taranov <kotaranov at microsoft.com>
Signed-off-by: Jason Gunthorpe <jgg at nvidia.com>
(cherry picked from commit f88320b698ad099a2f742adfb9f87177bfffe0c5)
Signed-off-by: Vinicius Peixoto <vinicius.peixoto at canonical.com>
---
 drivers/infiniband/hw/mana/device.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/infiniband/hw/mana/device.c b/drivers/infiniband/hw/mana/device.c
index e71ede017872..ac88219ba8d6 100644
--- a/drivers/infiniband/hw/mana/device.c
+++ b/drivers/infiniband/hw/mana/device.c
@@ -82,6 +82,7 @@ static int mana_ib_probe(struct auxiliary_device *adev,
 	upper_ndev = netdev_master_upper_dev_get_rcu(mc->ports[0]);
 	if (!upper_ndev) {
 		rcu_read_unlock();
+		ret = -ENODEV;
 		ibdev_err(&dev->ib_dev, "Failed to get master netdev");
 		goto free_ib_device;
 	}
-- 
2.45.2