[PATCH] net: dwc_eth_qos: Fix compilation warning in eqos_free_pkt()

[Patrice Chotard]

Fix compilation warning:

../arch/arm/include/asm/io.h: In function 'eqos_free_pkt':
../arch/arm/include/asm/io.h:103:32: warning: 'rx_desc' may be used 
uninitialized [-Wmaybe-uninitialized]
  103 | #define writel(v,c)     ({ u32 __v = v; __iowmb(); __arch_putl(__v,c); 
__v; })
      |                                ^~~
../drivers/net/dwc_eth_qos.c:1220:27: note: 'rx_desc' was declared here
 1220 |         struct eqos_desc *rx_desc;
      |                           ^~~~~~~

Signed-off-by: Patrice Chotard <patrice.chot...@foss.st.com>
---

 drivers/net/dwc_eth_qos.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/dwc_eth_qos.c b/drivers/net/dwc_eth_qos.c
index 9b3bce1dc87..9df3dde14f1 100644
--- a/drivers/net/dwc_eth_qos.c
+++ b/drivers/net/dwc_eth_qos.c
@@ -1217,7 +1217,7 @@ static int eqos_free_pkt(struct udevice *dev, uchar 
*packet, int length)
        struct eqos_priv *eqos = dev_get_priv(dev);
        u32 idx, idx_mask = eqos->desc_per_cacheline - 1;
        uchar *packet_expected;
-       struct eqos_desc *rx_desc;
+       struct eqos_desc *rx_desc = NULL;
 
        debug("%s(packet=%p, length=%d)\n", __func__, packet, length);
 
-- 
2.25.1