cxl/mbox: fix logical vs bitwise typo

This should be bitwise & instead of &&.

Fixes: 6179045c ("cxl/mbox: Block immediate mode in SET_PARTITION_INFO command")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/YmpgkbbQ1Yxu36uO@kiliSigned-off-by: Dan Williams <dan.j.williams@intel.com>

drivers/cxl/core/mbox.c

@@ -243,7 +243,7 @@ static bool cxl_payload_from_user_allowed(u16 opcode, void *payload_in)
 	case CXL_MBOX_OP_SET_PARTITION_INFO: {
 		struct cxl_mbox_set_partition_info *pi = payload_in;
 
-		if (pi->flags && CXL_SET_PARTITION_IMMEDIATE_FLAG)
+		if (pi->flags & CXL_SET_PARTITION_IMMEDIATE_FLAG)
 			return false;
 		break;
 	}