spi: altera: Fix memory leak on error path

Release master that have been previously allocated if the number of
chipselect is invalid.

Fixes: 8e04187c1bc7 ("spi: altera: add SPI core parameters support via platform data.")
Signed-off-by: Pan Bian <bianpan2016@163.com>
Reviewed-by: Tom Rix <trix@redhat.com>
Link: https://lore.kernel.org/r/20210120082635.49304-1-bianpan2016@163.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spi-altera.c b/drivers/spi/spi-altera.c
index cbc4c28..62ea0c9 100644 (file)
--- a/drivers/spi/spi-altera.c
+++ b/drivers/spi/spi-altera.c
@@ -254,7 +254,8 @@ static int altera_spi_probe(struct platform_device *pdev)
                        dev_err(&pdev->dev,
                                "Invalid number of chipselect: %hu\n",
                                pdata->num_chipselect);
-                       return -EINVAL;
+                       err = -EINVAL;
+                       goto exit;
                }
 
                master->num_chipselect = pdata->num_chipselect;