Merge branch 'bond-cleanups'

Zhengchao Shao says:

====================
bonding: do some cleanups in bond driver

Do some cleanups in bond driver.

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v2: use IS_ERR instead of NULL check in patch 2/5, update commit
    information in patch 3/5, remove inline modifier in patch 4/5
====================

Reviewed-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>