io_uring: cleanup {g,s]etsockopt sqe reading

Add a local variable for the sqe pointer to avoid repetition.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/8dbac0f9acda2d3842534eeb7ce10d9276b021ae.1743357108.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

Author: isilence

io_uring/uring_cmd.c

@@ -307,17 +307,18 @@ static inline int io_uring_cmd_getsockopt(struct socket *sock,
 					  struct io_uring_cmd *cmd,
 					  unsigned int issue_flags)
 {
+	const struct io_uring_sqe *sqe = cmd->sqe;
 	bool compat = !!(issue_flags & IO_URING_F_COMPAT);
 	int optlen, optname, level, err;
 	void __user *optval;
 
-	level = READ_ONCE(cmd->sqe->level);
+	level = READ_ONCE(sqe->level);
 	if (level != SOL_SOCKET)
 		return -EOPNOTSUPP;
 
-	optval = u64_to_user_ptr(READ_ONCE(cmd->sqe->optval));
-	optname = READ_ONCE(cmd->sqe->optname);
-	optlen = READ_ONCE(cmd->sqe->optlen);
+	optval = u64_to_user_ptr(READ_ONCE(sqe->optval));
+	optname = READ_ONCE(sqe->optname);
+	optlen = READ_ONCE(sqe->optlen);
 
 	err = do_sock_getsockopt(sock, compat, level, optname,
 				 USER_SOCKPTR(optval),
@@ -333,15 +334,16 @@ static inline int io_uring_cmd_setsockopt(struct socket *sock,
 					  struct io_uring_cmd *cmd,
 					  unsigned int issue_flags)
 {
+	const struct io_uring_sqe *sqe = cmd->sqe;
 	bool compat = !!(issue_flags & IO_URING_F_COMPAT);
 	int optname, optlen, level;
 	void __user *optval;
 	sockptr_t optval_s;
 
-	optval = u64_to_user_ptr(READ_ONCE(cmd->sqe->optval));
-	optname = READ_ONCE(cmd->sqe->optname);
-	optlen = READ_ONCE(cmd->sqe->optlen);
-	level = READ_ONCE(cmd->sqe->level);
+	optval = u64_to_user_ptr(READ_ONCE(sqe->optval));
+	optname = READ_ONCE(sqe->optname);
+	optlen = READ_ONCE(sqe->optlen);
+	level = READ_ONCE(sqe->level);
 	optval_s = USER_SOCKPTR(optval);
 
 	return do_sock_setsockopt(sock, compat, level, optname, optval_s,