misc: mei: client.c: return negative error code in mei_cl_write

mei_msg_hdr_init() return negative error code, rets should be
'PTR_ERR(mei_hdr)' rather than '-PTR_ERR(mei_hdr)'.

Fixes: 0cd7c01a

 ("mei: add support for mei extended header.")
Signed-off-by: Su Hui <suhui@nfschina.com>
Link: https://lore.kernel.org/r/20231120095523.178385-1-suhui@nfschina.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>