HID: wacom: Add error check to wacom_parse_and_register()
[ Upstream commit 16a9c24f ] Added a variable check and transition in case of an error Found by Linux Verification Center (linuxtesting.org) with SVACE. Signed-off-by: Denis Arefev <arefev@swemel.ru> Reviewed-by: Ping Cheng <ping.cheng@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Sasha Levin <sashal@kernel.org>
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