staging: gpib: Fix error handling paths in cb_gpib_probe()

If cb_gpib_config() fails, 'info' needs to be freed, as already done in the
remove function.

While at it, remove a pointless comment related to gpib_attach().

Fixes: e9dc69956d ("staging: gpib: Add Computer Boards GPIB driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/bf89d6f2f8b8c680720d02061fc4ebdd805deca8.1751709098.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/gpib/cb7210/cb7210.c

@@ -1184,8 +1184,7 @@ struct local_info {
 static int cb_gpib_probe(struct pcmcia_device *link)
 {
 	struct local_info *info;
-
-//	int ret, i;
+	int ret;
 
 	/* Allocate space for private device-specific data */
 	info = kzalloc(sizeof(*info), GFP_KERNEL);
@@ -1211,8 +1210,16 @@ static int cb_gpib_probe(struct pcmcia_device *link)
 
 	/* Register with Card Services */
 	curr_dev = link;
-	return cb_gpib_config(link);
-} /* gpib_attach */
+	ret = cb_gpib_config(link);
+	if (ret)
+		goto free_info;
+
+	return 0;
+
+free_info:
+	kfree(info);
+	return ret;
+}
 
 /*
  *   This deletes a driver "instance".  The device is de-registered