Input: snvs_pwrkey - drop input_free_device call if input_register_device fails

Current code uses devm_input_allocate_device() so don't explicitly call
input_free_device if input_register_device fails.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/keyboard/snvs_pwrkey.c

@@ -168,7 +168,6 @@ static int imx_snvs_pwrkey_probe(struct platform_device *pdev)
 	error = input_register_device(input);
 	if (error < 0) {
 		dev_err(&pdev->dev, "failed to register input device\n");
-		input_free_device(input);
 		return error;
 	}