disassebling: how to find out function

[ppaajjaa]

Please help! I've tried to find out what function is hidden at 0x1E230D8 in rilgsm.dll. However in my dump app *((DWORD *)0x1E230D8) causes invalid access to memory. So, how can I find out what function it is?

LDR R12, =0x1E230D8
LDR R12, [R12]
BX R12