The function gpib_register_driver() can fail and does not return an
error value if it fails.

Return the error value if gpib_register_driver() fails.

Signed-off-by: Nihar Chaithanya <niharchaithanya@gmail.com>
---
 drivers/staging/gpib/lpvo_usb_gpib/lpvo_usb_gpib.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/gpib/lpvo_usb_gpib/lpvo_usb_gpib.c b/drivers/staging/gpib/lpvo_usb_gpib/lpvo_usb_gpib.c
index 796c3a5be545..d8af811c75ca 100644
--- a/drivers/staging/gpib/lpvo_usb_gpib/lpvo_usb_gpib.c
+++ b/drivers/staging/gpib/lpvo_usb_gpib/lpvo_usb_gpib.c
@@ -1181,7 +1181,9 @@ static int usb_gpib_init_module(struct usb_interface *interface)
 		return rv;
 
 	if (!assigned_usb_minors) {
-		gpib_register_driver(&usb_gpib_interface, THIS_MODULE);
+		rv = gpib_register_driver(&usb_gpib_interface, THIS_MODULE);
+		if (rv)
+			goto exit;
 	} else {
 		/* check if minor is already registered - maybe useless, but if
 		 *  it happens the code is inconsistent somewhere
-- 
2.34.1