watchdog: marvell_gti_wdt: Fix error code in probe()

stable inclusion
from stable-v6.6.2
commit 4bb72ab68093c0c52a27f9f353c0ff18f70cfb75
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8IW7G

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=4bb72ab68093c0c52a27f9f353c0ff18f70cfb75



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[ Upstream commit 4b2b39f9395bc66c616d8d5a83642950fc3719b1 ]

This error path accidentally returns success.  Return -EINVAL instead.

Fixes: ef9e7fe2 ("Watchdog: Add marvell GTI watchdog driver")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Bharat Bhushan <bbhushan2@marvell.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/af326fd7-ac71-43a1-b7de-81779b61d242@moroto.mountain


Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>