macintosh/ams: Remove unneeded result variable

Return the value from i2c_add_driver() directly instead of storing it in
another redundant variable.

Reported-by: Zeal Robot <[e-mail]>
Signed-off-by: Minghao Chi <[e-mail]>
Signed-off-by: CGEL ZTE <[e-mail]>
Signed-off-by: Christophe Leroy <[e-mail]>
Signed-off-by: Michael Ellerman <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

drivers/macintosh/ams/ams-i2c.c

···
 
 int __init ams_i2c_init(struct device_node *np)
 {
-	int result;
-
 	/* Set implementation stuff */
 	ams_info.of_node = np;
 	ams_info.exit = ams_i2c_exit;
···
 	ams_info.clear_irq = ams_i2c_clear_irq;
 	ams_info.bustype = BUS_I2C;
 
-	result = i2c_add_driver(&ams_i2c_driver);
-
-	return result;
+	return i2c_add_driver(&ams_i2c_driver);
 }