renesas/rx65n: ram lock should in pair
@@ -216,6 +216,7 @@ static int rx65n_sbram_open(FAR struct file *filep)
nxmutex_lock(&bbr->lock);
if (bbr->refs == MAX_OPENCNT)
{
+ nxmutex_unlock(&bbr->lock);
return -EMFILE;
}
else
