i2c-mux-pinctrl: Fix probe error path

When allocating the memory for i2c busses, the code checked the wrong
variable and thus never detected if there was a memory error.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Cc: stable@vger.kernel.org
Signed-off-by: Jean Delvare <khali@linux-fr.org>

drivers/i2c/muxes/i2c-mux-pinctrl.c

@@ -169,7 +169,7 @@ static int __devinit i2c_mux_pinctrl_probe(struct platform_device *pdev)
 	mux->busses = devm_kzalloc(&pdev->dev,
 				   sizeof(mux->busses) * mux->pdata->bus_count,
 				   GFP_KERNEL);
-	if (!mux->states) {
+	if (!mux->busses) {
 		dev_err(&pdev->dev, "Cannot allocate busses\n");
 		ret = -ENOMEM;
 		goto err;