net: usb: rtl8150 fix unintiatilzed variables in rtl8150_get_link_ksettings

This functions retrieves values by passing a pointer. As the function
that retrieves them can fail before touching the pointers, the variables
must be initialized.

Fixes: 1da177e4 ("Linux-2.6.12-rc2")
Reported-by: syzbot+5186630949e3c55f0799@syzkaller.appspotmail.com
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Link: https://lore.kernel.org/r/20240619132816.11526-1-oneukum@suse.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/usb/rtl8150.c

@@ -778,7 +778,8 @@ static int rtl8150_get_link_ksettings(struct net_device *netdev,
 				      struct ethtool_link_ksettings *ecmd)
 {
 	rtl8150_t *dev = netdev_priv(netdev);
-	short lpa, bmcr;
+	short lpa = 0;
+	short bmcr = 0;
 	u32 supported;
 
 	supported = (SUPPORTED_10baseT_Half |