Goyle was not at MOM and is not in Azkaban

[samnanya]

No: HPFGUIDX 104280

Diana L.
We don't know for sure that Goyle wasn't one of the DEs arrested at 
the MoM, because Harry didn't know the identity of all the DEs that 
were there. All the DE's in the MoM were wearing masks as well, though 
several of them removed their masks during the chase for the prophecy 
ball.
If Goyle wasn't arrested at the MoM, then he would still have to 
go 'on the lam', so to speak, to avoid being arrested, because Harry 
named him as a DE and the WW will believe Harry's story now because 
of Voldemort's personal appearance inside the MoM.

Samnanya
Harry might indeed know if he was listening carefully at the door to 
Lucius Malfoy barking out orders for the death eaters to split into 
groups. THere were 12 de's there and if you check the names, Goyle was 
not among them. JKR spent a lot of words describing who went where, 
and Goyle was noticeable in his absence {so was wormtail, but that 
wasnt quite as glaring to me. Goyle and Crabbe are always describled 
together - like sons like fathers]
Goyle would not need to go on the lam because he did not "commit a 
crime". Last i recall, it is not a crime to assemble in a cemetary, 
even if you are welcoming the return of the dark lord. And it has been 
established that trials are necessary in the WW needed to prove guilt 
or innocence.