staging: rtl8192e: add space before open parenthesis

Fix the coding style error by adding a space before
open parenthesis '(' in a conditional statement.
Signed-off-by: Darshan D V <darshandv10@gmail.com>
Link: https://lore.kernel.org/r/20200720091442.19532-1-darshandv10@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192e/rtllib_crypt_ccmp.c

@@ -278,7 +278,7 @@ static int rtllib_ccmp_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
 		int aad_len, ret;
 
 		req = aead_request_alloc(key->tfm, GFP_ATOMIC);
-		if(!req)
+		if (!req)
 			return -ENOMEM;
 
 		aad_len = ccmp_init_iv_and_aad(hdr, pn, iv, aad);