Staging: hv: osd: remove MemAlloc wrapper

Use the "real" kmalloc call instead of a wrapper function.

Cc: Hank Janssen <hjanssen@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/staging/hv/Hv.c b/drivers/staging/hv/Hv.c
index 0e543ee..4ddaf6e 100644
--- a/drivers/staging/hv/Hv.c
+++ b/drivers/staging/hv/Hv.c
@@ -305,7 +305,7 @@
                (unsigned long)hypercallMsr.GuestPhysicalAddress << PAGE_SHIFT);
 
 	// Setup the global signal event param for the signal event hypercall
-	gHvContext.SignalEventBuffer = MemAlloc(sizeof(HV_INPUT_SIGNAL_EVENT_BUFFER));
+	gHvContext.SignalEventBuffer = kmalloc(sizeof(HV_INPUT_SIGNAL_EVENT_BUFFER), GFP_KERNEL);
 	if (!gHvContext.SignalEventBuffer)
 	{
 		goto Cleanup;