RDMA/rxe: Fix mr->map double free
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 v6.0.16 by commit 6ce577f09013206e36e674cd27da3707b2278268, it was introduced in version v6.0 by commit 1e75550648da1fa1cd1969e7597355de8fe8caf6. For more details please see the references link.