HID: i2c-hid-of: fix NULL-deref on failed power up

jira LE-3201
cve CVE-2024-26717
Rebuild_History Non-Buildable kernel-rt-4.18.0-553.22.1.rt7.363.el8_10
commit-author Johan Hovold <johan+linaro@kernel.org>
commit 00aab7d

A while back the I2C HID implementation was split in an ACPI and OF
part, but the new OF driver never initialises the client pointer which
is dereferenced on power-up failures.

Fixes: b33752c ("HID: i2c-hid: Reorganize so ACPI and OF are separate modules")
	Cc: stable@vger.kernel.org      # 5.12
	Cc: Douglas Anderson <dianders@chromium.org>
	Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
	Reviewed-by: Douglas Anderson <dianders@chromium.org>
	Signed-off-by: Jiri Kosina <jkosina@suse.com>
(cherry picked from commit 00aab7d)
	Signed-off-by: Jonathan Maple <jmaple@ciq.com>

Author: PlaidCat

drivers/hid/i2c-hid/i2c-hid-of.c

@@ -78,6 +78,7 @@ static int i2c_hid_of_probe(struct i2c_client *client,
 	if (!ihid_of)
 		return -ENOMEM;
 
+	ihid_of->client = client;
 	ihid_of->ops.power_up = i2c_hid_of_power_up;
 	ihid_of->ops.power_down = i2c_hid_of_power_down;