[Patch] ipc: remove unreachable code in sem.c

[Amerigo Wang]

This line is unreachable, remove it.

Signed-off-by: WANG Cong <amwang@xxxxxxxxxx>

---
diff --git a/ipc/sem.c b/ipc/sem.c
index 87c2b64..8439f2f 100644
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -652,7 +652,6 @@ static int semctl_nolock(struct ipc_namespace *ns, int semid,
 	default:
 		return -EINVAL;
 	}
-	return err;
 out_unlock:
 	sem_unlock(sma);
 	return err;
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