scsi: cxlflash: Adapter context init can return error

Adapter context creation can return either NULL or an error pointer.
Updating the check condition to reflect this.

Signed-off-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com>
Acked-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/cxlflash/main.c

@@ -1992,7 +1992,7 @@ static int init_mc(struct cxlflash_cfg *cfg, u32 index)
 		ctx = cxl_get_context(cfg->dev);
 	else
 		ctx = cxl_dev_context_init(cfg->dev);
-	if (unlikely(!ctx)) {
+	if (IS_ERR_OR_NULL(ctx)) {
 		rc = -ENOMEM;
 		goto err1;
 	}