How do I evaluate the integral $\frac{-i}{2(2\pi)^2r}\int_{-\infty}^{\infty}dp\frac{p\exp(ipr)}{\sqrt{p^2+m^2}}$?

Question

I would normally use residue theorem but I dont know how to approach such problems when there is a square root in the integrand. This is not a homework, I encountered this integral in quantum field theory while self studying. One can let $\rho=-ip$ and have a branch cuts at $\pm im$ and evaluate the integral approximately as $r \rightarrow \infty$.