staging: wilc1000: Fix memleak in wilc_bus_probe

When devm_clk_get() returns -EPROBE_DEFER, spi_priv
should be freed just like when wilc_cfg80211_init()
fails.

Fixes: 854d66df74aed ("staging: wilc1000: look for rtc_clk clock in spi mode")
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Link: https://lore.kernel.org/r/20200819115426.29852-1-dinghao.liu@zju.edu.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/wireless/microchip/wilc1000/spi.c b/drivers/net/wireless/microchip/wilc1000/spi.c
index 3f19e3f..a18dac0 100644 (file)
--- a/drivers/net/wireless/microchip/wilc1000/spi.c
+++ b/drivers/net/wireless/microchip/wilc1000/spi.c
@@ -112,9 +112,10 @@ static int wilc_bus_probe(struct spi_device *spi)
        wilc->dev_irq_num = spi->irq;
 
        wilc->rtc_clk = devm_clk_get(&spi->dev, "rtc_clk");
-       if (PTR_ERR_OR_ZERO(wilc->rtc_clk) == -EPROBE_DEFER)
+       if (PTR_ERR_OR_ZERO(wilc->rtc_clk) == -EPROBE_DEFER) {
+               kfree(spi_priv);
                return -EPROBE_DEFER;
-       else if (!IS_ERR(wilc->rtc_clk))
+       } else if (!IS_ERR(wilc->rtc_clk))
                clk_prepare_enable(wilc->rtc_clk);
 
        return 0;