staging: phy-hi3670-usb3: do a some minor cleanups

staging: phy-hi3670-usb3: do a some minor cleanups

Before moving this driver out of staging:

1. group some integers altogether;

2. Use:

	return some_function()

instead of:

	ret = some_function();
	return ret;

This is just a cleanup. No functional changes.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/55db419e42fd3af72494acbe0ea0f0d1de8906ac.1624542940.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>