mptcp: fix typos in comments

This patch fixes the spelling mistakes in comments.
The changes were generated using codespell and reviewed manually.

eariler -> earlier
greceful -> graceful
Signed-off-by: Shi-Sheng Yang <fourcolor4c@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://lore.kernel.org/r/20240502154740.249839-1-fourcolor4c@gmail.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

net/mptcp/subflow.c

@@ -911,7 +911,7 @@ static struct sock *subflow_syn_recv_sock(const struct sock *sk,
 	}
 
 	/* check for expected invariant - should never trigger, just help
-	 * catching eariler subtle bugs
+	 * catching earlier subtle bugs
 	 */
 	WARN_ON_ONCE(child && *own_req && tcp_sk(child)->is_mptcp &&
 		     (!mptcp_subflow_ctx(child) ||
@@ -1259,7 +1259,7 @@ static void mptcp_subflow_fail(struct mptcp_sock *msk, struct sock *ssk)
 	struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(ssk);
 	unsigned long fail_tout;
 
-	/* greceful failure can happen only on the MPC subflow */
+	/* graceful failure can happen only on the MPC subflow */
 	if (WARN_ON_ONCE(ssk != READ_ONCE(msk->first)))
 		return;