hw/xen/xen-hvm-common: Use g_new and error_report

Replace g_malloc with g_new and perror with error_report.

Signed-off-by: Vikram Garhwal <vikram.garhwal@amd.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Reviewed-by: Paul Durrant <paul@xen.org>

hw/xen/xen-hvm-common.c

@@ -33,7 +33,7 @@ void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size, MemoryRegion *mr,
     trace_xen_ram_alloc(ram_addr, size);
 
     nr_pfn = size >> TARGET_PAGE_BITS;
-    pfn_list = g_malloc(sizeof (*pfn_list) * nr_pfn);
+    pfn_list = g_new(xen_pfn_t, nr_pfn);
 
     for (i = 0; i < nr_pfn; i++) {
         pfn_list[i] = (ram_addr >> TARGET_PAGE_BITS) + i;
@@ -730,7 +730,7 @@ void destroy_hvm_domain(bool reboot)
             return;
         }
         if (errno != ENOTTY /* old Xen */) {
-            perror("xendevicemodel_shutdown failed");
+            error_report("xendevicemodel_shutdown failed with error %d", errno);
         }
         /* well, try the old thing then */
     }
@@ -784,7 +784,7 @@ static void xen_do_ioreq_register(XenIOState *state,
     }
 
     /* Note: cpus is empty at this point in init */
-    state->cpu_by_vcpu_id = g_malloc0(max_cpus * sizeof(CPUState *));
+    state->cpu_by_vcpu_id = g_new0(CPUState *, max_cpus);
 
     rc = xen_set_ioreq_server_state(xen_domid, state->ioservid, true);
     if (rc < 0) {
@@ -793,7 +793,7 @@ static void xen_do_ioreq_register(XenIOState *state,
         goto err;
     }
 
-    state->ioreq_local_port = g_malloc0(max_cpus * sizeof (evtchn_port_t));
+    state->ioreq_local_port = g_new0(evtchn_port_t, max_cpus);
 
     /* FIXME: how about if we overflow the page here? */
     for (i = 0; i < max_cpus; i++) {
@@ -850,13 +850,13 @@ void xen_register_ioreq(XenIOState *state, unsigned int max_cpus,
 
     state->xce_handle = qemu_xen_evtchn_open();
     if (state->xce_handle == NULL) {
-        perror("xen: event channel open");
+        error_report("xen: event channel open failed with error %d", errno);
         goto err;
     }
 
     state->xenstore = xs_daemon_open();
     if (state->xenstore == NULL) {
-        perror("xen: xenstore open");
+        error_report("xen: xenstore open failed with error %d", errno);
         goto err;
     }