staging: netlogic: Fix checkpatch.pl warning

This patch fixes the following checkpatch.pl warning:

WARNING: Possible unnecessary 'out of memory' message
#116: FILE: ./xlr_net.c:116:
+	if (!skb) {
+		pr_err("SKB allocation failed\n");

Signed-off-by: Ramon Fried <ramon.fried@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>