EDAC/x38: Fix a resource leak in x38_probe1()

If edac_mc_alloc() fails, also unmap the window.

  [ bp: Use separate labels, turning it into the classic unwind pattern. ]

Fixes: df8bc08 ("edac x38: new MC driver module")
Signed-off-by: Haoxiang Li <lihaoxiang@isrc.iscas.ac.cn>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20251223124350.1496325-1-lihaoxiang@isrc.iscas.ac.cn

Author: Haoxiang Li

drivers/edac/x38_edac.c

@@ -341,9 +341,12 @@ static int x38_probe1(struct pci_dev *pdev, int dev_idx)
 	layers[1].type = EDAC_MC_LAYER_CHANNEL;
 	layers[1].size = x38_channel_num;
 	layers[1].is_virt_csrow = false;
+
+
+	rc = -ENOMEM;
 	mci = edac_mc_alloc(0, ARRAY_SIZE(layers), layers, 0);
 	if (!mci)
-		return -ENOMEM;
+		goto unmap;
 
 	edac_dbg(3, "MC: init mci\n");
 
@@ -403,9 +406,9 @@ static int x38_probe1(struct pci_dev *pdev, int dev_idx)
 	return 0;
 
 fail:
+	edac_mc_free(mci);
+unmap:
 	iounmap(window);
-	if (mci)
-		edac_mc_free(mci);
 
 	return rc;
 }