net: Fix a data-race around gronormalbatch.
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 v5.19.6 by commit 21c6c135354aca32676b0e94420b3b74c4194966, it was introduced in version v5.4 by commit 323ebb61e32b478e2432c5a3cbf9e2ca678a9609. For more details please see the references link.