Staging: hv: Move on_io_completion() from struct hv_storvsc_request

In preparation of consolidating all I/O request state, move
the on_io_completion() field from struct hv_storvsc_request to
struct storvsc_request_extension.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/staging/hv/storvsc_api.h b/drivers/staging/hv/storvsc_api.h
index 68c5036..89fa155 100644
--- a/drivers/staging/hv/storvsc_api.h
+++ b/drivers/staging/hv/storvsc_api.h
@@ -64,6 +64,7 @@
 
 	unsigned char *sense_buffer;
 	void *context;
+	void (*on_io_completion)(struct hv_storvsc_request *request);
 
 	struct vstor_packet vstor_packet;
 };
@@ -72,7 +73,6 @@
 	u32 status;
 	u32 bytes_xfer;
 
-	void (*on_io_completion)(struct hv_storvsc_request *request);
 
 	struct storvsc_request_extension extension;