gpio: mlxbf2.c: Add check for bgpio_init failure

Add a check if bgpio_init fails.
Signed-off-by: Asmaa Mnebhi <asmaa@nvidia.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>

drivers/gpio/gpio-mlxbf2.c

@@ -256,6 +256,11 @@ mlxbf2_gpio_probe(struct platform_device *pdev)
 			NULL,
 			0);
 
+	if (ret) {
+		dev_err(dev, "bgpio_init failed\n");
+		return ret;
+	}
+
 	gc->direction_input = mlxbf2_gpio_direction_input;
 	gc->direction_output = mlxbf2_gpio_direction_output;
 	gc->ngpio = npins;