i2c: mux: demux-pinctrl: Fix an error handling path in 'i2c_demux_pinctrl_probe()'

A call to 'i2c_demux_deactivate_master()' is missing in the error handling
path, as already done in the remove function.

Fixes: 50a5ba87 ("i2c: mux: demux-pinctrl: add driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

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

@@ -272,6 +272,7 @@ static int i2c_demux_pinctrl_probe(struct platform_device *pdev)
 err_rollback_available:
 	device_remove_file(&pdev->dev, &dev_attr_available_masters);
 err_rollback:
+	i2c_demux_deactivate_master(priv);
 	for (j = 0; j < i; j++) {
 		of_node_put(priv->chan[j].parent_np);
 		of_changeset_destroy(&priv->chan[j].chgset);