media: cxd2880-spi: fix two memory leaks of dvb_spi

There are two return paths that do not kfree dvb_spi. Fix the memory
leaks by returning via the exit label fail_adapter that will free
dvi_spi.

Detected by CoverityScan, CID#1475991 ("Resource Leak")

Fixes: cb496cd4 ("media: cxd2880-spi: Add optional vcc regulator")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Yasunari Takiguchi <Yasunari.Takiguchi@sony.com>?
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/media/spi/cxd2880-spi.c

@@ -522,13 +522,15 @@ cxd2880_spi_probe(struct spi_device *spi)
 
 	dvb_spi->vcc_supply = devm_regulator_get_optional(&spi->dev, "vcc");
 	if (IS_ERR(dvb_spi->vcc_supply)) {
-		if (PTR_ERR(dvb_spi->vcc_supply) == -EPROBE_DEFER)
-			return -EPROBE_DEFER;
+		if (PTR_ERR(dvb_spi->vcc_supply) == -EPROBE_DEFER) {
+			ret = -EPROBE_DEFER;
+			goto fail_adapter;
+		}
 		dvb_spi->vcc_supply = NULL;
 	} else {
 		ret = regulator_enable(dvb_spi->vcc_supply);
 		if (ret)
-			return ret;
+			goto fail_adapter;
 	}
 
 	dvb_spi->spi = spi;