Remove 'NULL' check for 'data->hpdev.client' in error flow of
mlxreg_lc_probe(). It cannot be 'NULL' at this point.
Fixes: b4b830a34d80  ("platform/mellanox: mlxreg-lc: Fix error flow and extend verbosity")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Link: https://lore.kernel.org/r/20220823201937.46855-5-vadimp@nvidia.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
 regcache_sync_fail:
 regmap_write_fail:
 devm_regmap_init_i2c_fail:
-       if (data->hpdev.client) {
-               i2c_unregister_device(data->hpdev.client);
-               data->hpdev.client = NULL;
-       }
+       i2c_unregister_device(data->hpdev.client);
+       data->hpdev.client = NULL;
 i2c_new_device_fail:
        i2c_put_adapter(data->hpdev.adapter);
        data->hpdev.adapter = NULL;