net/smc: send directly on setting TCP_NODELAY

mainline inclusion
from mainline-v5.18-rc1
commit b70a5cc0
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I78OQ2
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/smc?id=b70a5cc045197aad9c159042621baf3c015f6cc7



--------------------------------

In commit ea785a1a("net/smc: Send directly when
TCP_CORK is cleared"), we don't use delayed work
to implement cork.

This patch use the same algorithm, removes the
delayed work when setting TCP_NODELAY and send
directly in setsockopt(). This also makes the
TCP_NODELAY the same as TCP.

Cc: Tony Lu <tonylu@linux.alibaba.com>
Signed-off-by: Dust Li <dust.li@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Litao Jiao <jiaolitao@sangfor.com.cn>