cxl/pci: Drop wait_for_valid() from cxl_await_media_ready()

A check mem_info_valid already happens in __cxl_dvsec_ranges(). Rely on
that instead of calling wait_for_valid again.
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/165291686632.1426646.7479581732894574486.stgit@dwillia2-xfhSigned-off-by: Dan Williams <dan.j.williams@intel.com>

drivers/cxl/pci.c

@@ -431,10 +431,6 @@ static int cxl_await_media_ready(struct cxl_dev_state *cxlds)
 	u64 md_status;
 	int rc, i;
 
-	rc = wait_for_valid(cxlds);
-	if (rc)
-		return rc;
-
 	for (i = mbox_ready_timeout; i; i--) {
 		u32 temp;