RDMA/nldev: Set error code in rdma_nl_notify_event

In case of error set the error code before the goto.

Fixes: 6ff57a2 ("RDMA/nldev: Fix NULL pointer dereferences issue in rdma_nl_notify_event")
Reported-by: Dan Carpenter <[email protected]>
Closes: https://lore.kernel.org/linux-rdma/[email protected]/
Signed-off-by: Chiara Meiohas <[email protected]>
Reviewed-by: Maher Sanalla <[email protected]>
Link: https://patch.msgid.link/13eb25961923f5de9eb9ecbbc94e26113d6049ef.1733815944.git.leonro@nvidia.com
Reviewed-by: Kalesh AP <[email protected]>
Signed-off-by: Leon Romanovsky <[email protected]>

Author: chiarameiohas

drivers/infiniband/core/nldev.c

@@ -2833,8 +2833,8 @@ int rdma_nl_notify_event(struct ib_device *device, u32 port_num,
 			  enum rdma_nl_notify_event_type type)
 {
 	struct sk_buff *skb;
+	int ret = -EMSGSIZE;
 	struct net *net;
-	int ret = 0;
 	void *nlh;
 
 	net = read_pnet(&device->coredev.rdma_net);