HID: amd_sfh: Fix potential NULL pointer dereference

The cl_data field of a privdata must be allocated and updated before
using in amd_sfh_hid_client_init() function.

Hence handling NULL pointer cl_data accordingly.

Fixes: d46ef75 ("HID: amd_sfh: Fix potential NULL pointer dereference")
Signed-off-by: Basavaraj Natikar <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>

Author: basuamd

drivers/hid/amd-sfh-hid/amd_sfh_pcie.c

@@ -251,21 +251,17 @@ static int amd_mp2_pci_probe(struct pci_dev *pdev, const struct pci_device_id *i
 		return rc;
 	}
 
-	rc = amd_sfh_hid_client_init(privdata);
-	if (rc)
-		return rc;
-
 	privdata->cl_data = devm_kzalloc(&pdev->dev, sizeof(struct amdtp_cl_data), GFP_KERNEL);
 	if (!privdata->cl_data)
 		return -ENOMEM;
 
-	rc = devm_add_action_or_reset(&pdev->dev, amd_mp2_pci_remove, privdata);
+	mp2_select_ops(privdata);
+
+	rc = amd_sfh_hid_client_init(privdata);
 	if (rc)
 		return rc;
 
-	mp2_select_ops(privdata);
-
-	return 0;
+	return devm_add_action_or_reset(&pdev->dev, amd_mp2_pci_remove, privdata);
 }
 
 static int __maybe_unused amd_mp2_pci_resume(struct device *dev)