staging: nvec: Convert to use devm_input_allocate

nvec_kbd is converted to use devm_input_allocate.
This simplifies error handling and remove path.
Signed-off-by: Leon Romanovsky <leon@leon.nu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/nvec/nvec_kbd.c

@@ -126,7 +126,7 @@ static int nvec_kbd_probe(struct platform_device *pdev)
 	for (i = 0; i < ARRAY_SIZE(extcode_tab_us102); ++i)
 		keycodes[j++] = extcode_tab_us102[i];
 
-	idev = input_allocate_device();
+	idev = devm_input_allocate_device(&pdev->dev);
 	idev->name = "nvec keyboard";
 	idev->phys = "nvec";
 	idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) | BIT_MASK(EV_LED);
@@ -142,7 +142,7 @@ static int nvec_kbd_probe(struct platform_device *pdev)
 	clear_bit(0, idev->keybit);
 	err = input_register_device(idev);
 	if (err)
-		goto fail;
+		return err;
 
 	keys_dev.input = idev;
 	keys_dev.notifier.notifier_call = nvec_keys_notifier;
@@ -161,10 +161,6 @@ static int nvec_kbd_probe(struct platform_device *pdev)
 	nvec_write_async(nvec, clear_leds, sizeof(clear_leds));
 
 	return 0;
-
-fail:
-	input_free_device(idev);
-	return err;
 }
 
 static int nvec_kbd_remove(struct platform_device *pdev)
@@ -177,8 +173,6 @@ static int nvec_kbd_remove(struct platform_device *pdev)
 	nvec_write_async(nvec, disable_kbd, 2);
 	nvec_unregister_notifier(nvec, &keys_dev.notifier);
 
-	input_unregister_device(keys_dev.input);
-
 	return 0;
 }