ACPI / CPPC: set an error code on probe error path

We should return -EINVAL (instead of 0) if get_cpu_device() fails.

Fixes: 158c998ea44b (ACPI / CPPC: add sysfs support to compute delivered performance)
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
index d0d0504b7c89..e0ea8f56d2bf 100644
--- a/drivers/acpi/cppc_acpi.c
+++ b/drivers/acpi/cppc_acpi.c
@@ -784,8 +784,10 @@ int acpi_cppc_processor_probe(struct acpi_processor *pr)
 
         /* Add per logical CPU nodes for reading its feedback counters. */
         cpu_dev = get_cpu_device(pr->id);
-        if (!cpu_dev)
+        if (!cpu_dev) {
+                ret = -EINVAL;
                 goto out_free;
+        }
 
         ret = kobject_init_and_add(&cpc_ptr->kobj, &cppc_ktype, &cpu_dev->kobj,
                         "acpi_cppc");