RDMA/mlx5: Call dev_put() after the blocking notifier

Move dev_put() call to occur directly after the blocking
notifier, instead of within the event handler.

Fixes: 8d159eb2 ("RDMA/mlx5: Use IB set_netdev and get_netdev functions")
Signed-off-by: Chiara Meiohas <cmeiohas@nvidia.com>
Link: https://patch.msgid.link/342ff94b3dcbb07da1c7dab862a73933d604b717.1730381292.git.leon@kernel.org


Signed-off-by: Leon Romanovsky <leon@kernel.org>