[PATCH net] dpll: zl3073x: fix memory leak on pin registration failure

If zl3073x_dpll_pin_register() fails, the allocated pin is not yet
added to zldpll->pins list. The error path calls
zl3073x_dpll_pins_unregister() which only iterates pins on the list,
so the current pin is leaked. Free the pin before jumping to the error
label.

Fixes: 75a71ecc2412 ("dpll: zl3073x: Register DPLL devices and pins")
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
---
 drivers/dpll/zl3073x/dpll.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/dpll/zl3073x/dpll.c b/drivers/dpll/zl3073x/dpll.c
index c95e93ef3ab0..d6232aa371be 100644
--- a/drivers/dpll/zl3073x/dpll.c
+++ b/drivers/dpll/zl3073x/dpll.c

@@ -1563,8 +1563,10 @@ zl3073x_dpll_pins_register(struct zl3073x_dpll *zldpll)
 		}
 
 		rc = zl3073x_dpll_pin_register(pin, index);
-		if (rc)
+		if (rc) {
+			zl3073x_dpll_pin_free(pin);
 			goto error;
+		}
 
 		list_add(&pin->list, &zldpll->pins);
 	}

-- 
2.53.0