Calculate $\displaystyle\lim_{n\to\infty} \int_R \frac{1+nx}{(1+x)^n } 1_{[0,1]} (x) d\lambda$

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As the title says I have to first proof the existence and the calculate the following limit:

$$\lim_{n\to\infty} \int_R \frac{1+nx}{(1+x)^n } 1_{[0,1]} (x) d\lambda$$

My idea:

Because of the indicator-function I can rewrite the integral and go from $R$ to the interval $[0,1]$:

$$\lim_{n\to\infty} \int_0^1 \frac{1+nx}{(1+x)^n } d\lambda$$

because $(1+x)^n > 1+nx $ follows from the Bernoulli inequality

$\frac{1+nx}{(1+x)^n}<1 =:M$ and the existence follows from the dominated convergence Theorem.

Can I the continue this way? :

$$\lim_{n\to\infty} \int_0^1 \frac{1+nx}{(1+x)^n } d\lambda= $$

$$\int_0^1 \lim_{n\to\infty} \frac{1+nx}{(1+x)^n } d\lambda= \int_0^1 0 d\lambda = 0$$