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/gpio/gpib_bitbang.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/gpib/gpio/gpib_bitbang.c b/drivers/staging/gpib/gpio/gpib_bitbang.c
index a2d562cbd65b..c88d85b7dc71 100644
--- a/drivers/staging/gpib/gpio/gpib_bitbang.c
+++ b/drivers/staging/gpib/gpio/gpib_bitbang.c
@@ -1341,7 +1341,10 @@ return_to_local : bb_return_to_local,
 
 static int __init bb_init_module(void)
 {
-	gpib_register_driver(&bb_interface, THIS_MODULE);
+	int result = gpib_register_driver(&bb_interface, THIS_MODULE);
+
+	if (result)
+		return result;
 
 	dbg_printk(0, "module loaded with pin map \"%s\"%s\n",
 		   pin_map, (sn7516x_used) ? " and SN7516x driver support" : "");
-- 
2.34.1