ipack: ipoctal: remove unnecessary (void*) conversions

arg is a void * type and does not require a cast.

Signed-off-by: XU pengfei <xupengfei@nfschina.com>
Link: https://lore.kernel.org/r/20230110101613.4519-1-xupengfei@nfschina.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>