platform/x86: ideapad-laptop: Refactor ideapad_sync_touchpad_state()

platform/x86: ideapad-laptop: Refactor ideapad_sync_touchpad_state()

[ Upstream commit 289a59895e7a380cdc7fe2780d3073f4b9237020 ]

Add an error exit for read_ec_data() failing instead of putting the main
body in an if (success) block.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Tested-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Tested-by: Maxim Mikityanskiy <maxtram95@gmail.com>
Link: https://lore.kernel.org/r/20221117110244.67811-2-hdegoede@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>