tools/testing/cxl: Fix some error exits

Fix a few typos where 'goto err_port' was used rather than the object
specific cleanup.
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Link: https://lore.kernel.org/r/166752184255.947915.16163477849330181425.stgit@dwillia2-xfh.jf.intel.comSigned-off-by: Dan Williams <dan.j.williams@intel.com>

tools/testing/cxl/test/cxl.c

@@ -695,7 +695,7 @@ static __init int cxl_test_init(void)
 
 		pdev = platform_device_alloc("cxl_switch_uport", i);
 		if (!pdev)
-			goto err_port;
+			goto err_uport;
 		pdev->dev.parent = &root_port->dev;
 
 		rc = platform_device_add(pdev);
@@ -713,7 +713,7 @@ static __init int cxl_test_init(void)
 
 		pdev = platform_device_alloc("cxl_switch_dport", i);
 		if (!pdev)
-			goto err_port;
+			goto err_dport;
 		pdev->dev.parent = &uport->dev;
 
 		rc = platform_device_add(pdev);