CVE-2024-42067 bpf: Take return from set_memory_rox() into account with bpf_jit_binary_lock_ro()

In the Linux kernel, the following vulnerability has been resolved:

bpf: Take return from set_memory_rox() into account with bpf_jit_binary_lock_ro()

set_memory_rox() can fail, leaving memory unprotected.

Check return and bail out when bpf_jit_binary_lock_ro() returns
an error.