staging: wilc1000: fix mgmt_tx()

There was a missing curly brace so this function returns failure instead
of succeeding.

Fixes: 06fb9336 ('staging: wilc1000: wilc_wfi_cfgoperations.c: replaces PRINT_ER with netdev_err')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wilc1000/wilc_wfi_cfgoperations.c

@@ -1832,9 +1832,10 @@ static int mgmt_tx(struct wiphy *wiphy,
 			return -EFAULT;
 
 		mgmt_tx->buff = kmalloc(buf_len, GFP_KERNEL);
-		if (!mgmt_tx->buff)
+		if (!mgmt_tx->buff) {
 			kfree(mgmt_tx);
-			return -EFAULT;
+			return -ENOMEM;
+		}
 
 		memcpy(mgmt_tx->buff, buf, len);
 		mgmt_tx->size = len;