[PATCH] cpufreq: airoha: fix probe failure with correct error check

[Christian Marangi <ansuelsmth@gmail.com>]

From: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>

dev_pm_domain_attach_list() returns the number of attached PM domains
on success (a positive count), or a negative error code on failure.
The driver checks "if (ret)" which treats a successful attachment of
one or more PM domains as an error, causing the probe to fail with
return code 1.

Fix by checking "if (ret < 0)" like all other users of this API.

Cc: stable@vger.kernel.org
Fixes: 84cf9e541ccc ("cpufreq: airoha: Add EN7581 CPUFreq SMCCC driver")
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
---
 drivers/cpufreq/airoha-cpufreq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/cpufreq/airoha-cpufreq.c b/drivers/cpufreq/airoha-cpufreq.c
index 3e7770860d13..8283c528d0c1 100644
--- a/drivers/cpufreq/airoha-cpufreq.c
+++ b/drivers/cpufreq/airoha-cpufreq.c
@@ -64,7 +64,7 @@ static int airoha_cpufreq_probe(struct platform_device *pdev)
 	/* Attach PM for OPP */
 	ret = dev_pm_domain_attach_list(cpu_dev, &attach_data,
 					&priv->pd_list);
-	if (ret)
+	if (ret < 0)
 		goto clear_opp_config;
 
 	cpufreq_dt = platform_device_register_simple("cpufreq-dt", -1, NULL, 0);
-- 
2.53.0