vxge: remove unnecessary cast in kfree()

[ Upstream commit b6bf4776 ]

Remove unnecessary cast in the argument to kfree.

Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
Link: https://lore.kernel.org/r/20201023085533.4792-1-vulab@iscas.ac.cn


Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: e3f269ed ("x86/pm: Work around false positive kmemleak report in msr_build_context()")
Signed-off-by: Sasha Levin <sashal@kernel.org>