[PATCH -next] ecryptfs: remove unnessesary null check in ecryptfs_keyring_auth_tok_for_sig

[YueHaibing]

request_key and ecryptfs_get_encrypted_key never
return a NULL pointer, so no need do a null check.

Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
---
 fs/ecryptfs/keystore.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/ecryptfs/keystore.c b/fs/ecryptfs/keystore.c
index 95662fd46b1d..a1afb162b9d2 100644
--- a/fs/ecryptfs/keystore.c
+++ b/fs/ecryptfs/keystore.c
@@ -1626,9 +1626,9 @@ int ecryptfs_keyring_auth_tok_for_sig(struct key **auth_tok_key,
 	int rc = 0;
 
 	(*auth_tok_key) = request_key(&key_type_user, sig, NULL);
-	if (!(*auth_tok_key) || IS_ERR(*auth_tok_key)) {
+	if (IS_ERR(*auth_tok_key)) {
 		(*auth_tok_key) = ecryptfs_get_encrypted_key(sig);
-		if (!(*auth_tok_key) || IS_ERR(*auth_tok_key)) {
+		if (IS_ERR(*auth_tok_key)) {
 			printk(KERN_ERR "Could not find key with description: [%s]\n",
 			      sig);
 			rc = process_request_key_err(PTR_ERR(*auth_tok_key));
-- 
2.17.1