accelerator/rocm: fix check_addr function

the hipPointerGetAttribute function returns an error
code for host memory. Hence, an error code might not
indicate a problem, but host memory. Adjust return code
of the function accordingly.

Signed-off-by: Edgar Gabriel <Edgar.Gabriel@amd.com>

Author: edgargabriel

opal/mca/accelerator/rocm/accelerator_rocm_module.c

@@ -68,18 +68,19 @@ opal_accelerator_base_module_t opal_accelerator_rocm_module =
 
 static int mca_accelerator_rocm_check_addr (const void *addr, int *dev_id, uint64_t *flags)
 {
-    int ret = -1;
+    int ret = 0;
     hipPointerAttribute_t srcAttr;
     hipError_t err;
 
+    *dev_id = MCA_ACCELERATOR_NO_DEVICE_ID;
+
     if (NULL == addr || NULL == flags) {
         return OPAL_ERR_BAD_PARAM;
     }
 
     *flags = 0;
     err = hipPointerGetAttributes(&srcAttr, addr);
     if (hipSuccess == err) {
-        ret = 0;
         if (hipMemoryTypeDevice == srcAttr.memoryType) {
             //We might want to set additional flags in a later iteration.
             //*flags |= MCA_ACCELERATOR_FLAGS_HOST_LDSTR;