Set in_region_count to 0 during memory retrieve

in_region_count will be used during the lend, donate and share memory
transactions and it is not needed for the retrieve request.

Signed-off-by: Davidson K <davidson.kumaresan@arm.com>
Change-Id: Id9f805aa7b9e16878a1114f71cd465dc97cc5dfd
diff --git a/components/rpc/ffarpc/endpoint/ffarpc_call_ep.c b/components/rpc/ffarpc/endpoint/ffarpc_call_ep.c
index 99a5056..a502d82 100644
--- a/components/rpc/ffarpc/endpoint/ffarpc_call_ep.c
+++ b/components/rpc/ffarpc/endpoint/ffarpc_call_ep.c
@@ -75,7 +75,7 @@
 	struct sp_memory_descriptor desc = { };
 	struct sp_memory_access_descriptor acc_desc = { };
 	struct sp_memory_region region = { };
-	uint32_t in_region_count = 1;
+	uint32_t in_region_count = 0;
 	uint32_t out_region_count = 1;
 	uint64_t handle = 0;
 	rpc_status_t rpc_status = TS_RPC_ERROR_INTERNAL;