kunit: skb: use "gfp" variable instead of hardcoding GFP_KERNEL

[ Upstream commit fd0a5afb54 ]

The intent here was clearly to use the gfp variable flags instead of
hardcoding GFP_KERNEL.  All the callers pass GFP_KERNEL as the gfp
flags so this doesn't affect runtime.

Fixes: b3231d353a ("kunit: add a convenience allocation wrapper for SKBs")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: David Gow <davidgow@google.com>
Reviewed-by: Kuan-Wei Chiu <visitorckw@gmail.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

include/kunit/skbuff.h

@@ -29,7 +29,7 @@ static void kunit_action_kfree_skb(void *p)
 static inline struct sk_buff *kunit_zalloc_skb(struct kunit *test, int len,
 					       gfp_t gfp)
 {
-	struct sk_buff *res = alloc_skb(len, GFP_KERNEL);
+	struct sk_buff *res = alloc_skb(len, gfp);
 
 	if (!res || skb_pad(res, len))
 		return NULL;