[PATCH V2] usb: core: Remove redundant NULL checks before kfree

[cgel . zte]

From: Minghao Chi <chi.minghao@xxxxxxxxxx>

Checking a pointer for NULL before calling kfree() on it is redundant,
kfree() deals with NULL pointers just fine.

Reported-by: Zeal Robot <zealci@xxxxxxxxxx>
Signed-off-by: Minghao Chi <chi.minghao@xxxxxxxxxx>
---
v1->v2:
	remove "quirk_list = NULL"
 drivers/usb/core/quirks.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
index f99a65a64588..9ec12c42db30 100644
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -56,10 +56,7 @@ static int quirks_param_set(const char *value, const
struct kernel_param *kp)
 		if (val[i] == ',')
 			quirk_count++;
 
-	if (quirk_list) {
-		kfree(quirk_list);
-		quirk_list = NULL;
-	}
+	kfree(quirk_list);
 
 	quirk_list = kcalloc(quirk_count, sizeof(struct quirk_entry),
 			     GFP_KERNEL);
-- 
2.25.1