mptcp: fix deadlock in _mptcppush_pending()
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 v5.15.11 by commit 23311b92755ffa9087332d1bb8c71c0f6a10cc08, it was introduced in version v5.13 by commit 1b3e7ede1365a24db1b4fd837e58a595f52fa4ad. For more details please see the references link.