RDMA/hns: fix memory leak in hnsrocealloc_mr()
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.10.163 by commit 164fa80330a81db67c26d10d071083941d29a510, it was introduced in version v5.8 by commit 9b2cf76c9f052987ae5c4ad450ebebdc7c5d7b87. For more details please see the references link.