rxrpc: Fix rxrpcpeer leak in rxrpclookupbundle()
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 v5.15.7 by commit bc97458620e38961af9505cc060ad4cf5c9e4af7, it was introduced in version v5.10 by commit 245500d853e9f20036cec7df4f6984ece4c6bf26. For more details please see the references link.