linux-phytec-ti

pinctrl: single: Fix a couple error codes

commit 712778d02d5c24e0bb5cfb9ccb9213496853a57f upstream.

We should return -ENOMEM instead of success if pcs_add_function() fails.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Nishanth Menon <nm@ti.com>