[PATCH] Staging: gdm724x: mux: Check return value of register_lte_tty_driver().

[Quytelda Kahja]

Check the return value of of the register_lte_tty_driver() call in the
module initialization function.

Signed-off-by: Quytelda Kahja <quytelda@xxxxxxxxxxx>
---
 drivers/staging/gdm724x/gdm_mux.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/gdm724x/gdm_mux.c b/drivers/staging/gdm724x/gdm_mux.c
index 996b1f538aae..63921bad519e 100644
--- a/drivers/staging/gdm724x/gdm_mux.c
+++ b/drivers/staging/gdm724x/gdm_mux.c
@@ -657,7 +657,11 @@ static struct usb_driver gdm_mux_driver = {
 
 static int __init gdm_usb_mux_init(void)
 {
-	register_lte_tty_driver();
+	int ret;
+
+	ret = register_lte_tty_driver();
+	if (ret)
+		return ret;
 
 	return usb_register(&gdm_mux_driver);
 }
-- 
2.16.1