icmp: Fix a data-race around sysctl_icmp_errors_use_inbound_ifaddr.

mainline inclusion
from mainline-v5.19-rc7
commit d2efabce
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8MEXU
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d2efabce81db7eed1c98fa1a3f203f0edd738ac3



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While reading sysctl_icmp_errors_use_inbound_ifaddr, it can be changed
concurrently.  Thus, we need to add READ_ONCE() to its reader.

Fixes: 1c2fb7f9 ("[IPV4]: Sysctl configurable icmp error source address.")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Conflicts:
	net/ipv4/sysctl_net_ipv4.c

Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>