Staging: hv: remove ASSERT() in Channel.c

VmbusChannelOpen() will now return -EINVAL if UserDataLen is too big.
Previously this was handled by an assert.
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Hank Janssen <hjanssen@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/hv/Channel.c

@@ -258,7 +258,11 @@ int VmbusChannelOpen(struct vmbus_channel *NewChannel, u32 SendRingBufferSize,
 						  PAGE_SHIFT;
 	openMsg->ServerContextAreaGpadlHandle = 0; /* TODO */
 
-	ASSERT(UserDataLen <= MAX_USER_DEFINED_BYTES);
+	if (UserDataLen > MAX_USER_DEFINED_BYTES) {
+		err = -EINVAL;
+		goto errorout;
+	}
+
 	if (UserDataLen)
 		memcpy(openMsg->UserData, UserData, UserDataLen);