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Remove unneeded variable: "ret". Signed-off-by: zuoqilin <zuoqilin@yulong.com> Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> [mpe: Just return NOTIFY_OK directly] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210326075619.48-1-zuoqilin1@163.com