SWDEV-244772 - Fix dtest hipMemcpyWithStreamMultiThread.cpp.

hipSetDevice is not used correctly to allocate on multiple devices in mGPU setup.
Due to which hipMalloc was called on the same device on multiple threads leading to out of memory issues on some devices with lesser memory.

Change-Id: I0e5b1bc028b9ecb11bd40c3a5edf715f8bd721ff

tests/src/runtimeApi/memory/hipMemcpyWithStreamMultiThread.cpp

@@ -467,6 +467,7 @@ void HipMemcpyWithStreamMultiThreadtests::TestkindDefaultForDtoD(void) {
                       &A_h[0], &B_h[0], &C_h[0], N, false);
 
   for (int i=1; i < numDevices; ++i) {
+    HIPCHECK(hipSetDevice(i));
     HIPCHECK(hipMalloc(&A_d[i], Nbytes));
     HIPCHECK(hipMalloc(&B_d[i], Nbytes));
     HIPCHECK(hipMalloc(&C_d[i], Nbytes));
@@ -476,6 +477,7 @@ void HipMemcpyWithStreamMultiThreadtests::TestkindDefaultForDtoD(void) {
 
   hipStream_t stream[numDevices];
   for (int i=0; i < numDevices; ++i) {
+    HIPCHECK(hipSetDevice(i));
     HIPCHECK(hipStreamCreate(&stream[i]));
   }