Error in fuse_ops for hip_gemm_pointwise

[ahsan-ca]

Repro:

#fuse_ops_fail.py
import migraphx

p = migraphx.program()
mm = p.get_main_module()

s1 = migraphx.shape(type="float_type", lens=[1, 3072])
s2 = migraphx.shape(type="float_type", lens=[3072, 18432])
s3 = migraphx.shape(type="float_type", lens=[18432])

x1 = mm.add_parameter("x1", s1)
x2 = mm.add_parameter("x2", s2)
c = mm.add_parameter("c", s3)

dot = mm.add_instruction(migraphx.op("dot"), [x1, x2])

c = mm.add_instruction(migraphx.op("multibroadcast", out_lens=dot.shape().lens()), [c])
add = mm.add_instruction(migraphx.op("add"), [c, dot])

mm.add_return([add])

Compile using driver:

export MIGRAPHX_ENABLE_HIPBLASLT_GEMM=1	
migraphx-driver compile fuse_ops_fail.py

Error:

terminate called after throwing an instance of 'std::bad_function_call'
  what():  bad_function_call
Aborted (core dumped)

[ahsan-ca]

Similar to #3681, this needs to be fixed for hip_gemm_pointwise as well.